diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 6d7347f..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-# Clojure CircleCI 2.0 configuration file
-#
-# Check https://circleci.com/docs/2.0/language-clojure/ for more details
-#
-version: 2
-
-job_defaults: &defaults
-    docker:
-      - image: frolvlad/alpine-bash
-    working_directory: ~/repo
-    environment:
-      ENVIRONMENT: "test"
-      TERM: "dumb"
-
-jobs:
-  tests:
-    <<: *defaults
-    steps:
-      - checkout
-      - run: ./test/run
-
-workflows:
-  version: 2
-  run-tests:
-    jobs:
-      - tests
\ No newline at end of file
diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
new file mode 100644
index 0000000..7ee639f
--- /dev/null
+++ b/.github/workflows/cd.yml
@@ -0,0 +1,42 @@
+name: Publish
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  publish:
+    name: Publish for ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        # This should work with only the `include`s but it currently doesn't because of this bug:
+        # https://github.community/t5/How-to-use-Git-and-GitHub/GitHub-Actions-Matrix-options-dont-work-as-documented/td-p/29558
+        target: [x86_64-osx, x86_64-unknown-linux-musl, armv7-unknown-linux-musleabihf, armv7-linux-androideabi, aarch64-linux-android]
+        include:
+          - os: macos-latest
+            target: x86_64-osx
+          - os: ubuntu-latest
+            target: x86_64-unknown-linux-musl
+          - os: ubuntu-latest
+            target: armv7-unknown-linux-musleabihf
+          - os: ubuntu-latest
+            target: armv7-linux-androideabi
+          - os: ubuntu-latest
+            target: aarch64-linux-android
+
+    steps:
+    - uses: hecrj/setup-rust-action@v1.3.1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v1
+    - name: Build
+      run: scripts/action release ${{ matrix.target }}
+    - name: Upload binaries to release
+      uses: svenstaro/upload-release-action@v1-release
+      with:
+        repo_token: ${{ secrets.GITHUB_TOKEN }}
+        file: target/tar/navi.tar.gz
+        asset_name: navi-${{ matrix.target }}.tar.gz
+        tag: ${{ github.ref }}
\ No newline at end of file
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..c380d0f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,79 @@
+# Based on https://github.com/actions-rs/meta/blob/master/recipes/quickstart.md
+#
+# While our "example" application has the platform-specific code,
+# for simplicity we are compiling and testing everything on the Ubuntu environment only.
+# For multi-OS testing see the `cross.yml` workflow.
+
+on: [push]
+
+name: Quickstart
+
+jobs:
+  check:
+    name: Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Run cargo check
+        uses: actions-rs/cargo@v1
+        continue-on-error: false
+        with:
+          command: check
+
+  test:
+    name: Test Suite
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Run cargo test
+        uses: actions-rs/cargo@v1
+        continue-on-error: false
+        with:
+          command: test
+
+  lints:
+    name: Lints
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt, clippy
+
+      - name: Run cargo fmt
+        uses: actions-rs/cargo@v1
+        continue-on-error: false
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - name: Run cargo clippy
+        uses: actions-rs/cargo@v1
+        continue-on-error: false
+        with:
+          command: clippy
+          args: -- -D warnings
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..53eaa21
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+**/*.rs.bk
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..095b023
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,320 @@
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+# It is not intended for manual editing.
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+
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+dependencies = [
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+
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+"checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
+"checksum unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
+"checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
+"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
+"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
+"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
+"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..f4ea05f
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "navi"
+version = "2.0.0"
+authors = ["Denis Isidoro <denis_isidoro@live.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+regex = "1.3.4"
+structopt = "0.3"
+termion = "1.5.5"
+# lazy_static = "1.4.0"
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 4260650..6ee6d14 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,8 @@
 install:
 	scripts/install
 
+install:
+	scripts/make install
+
 uninstall:
-	scripts/uninstall
-
-release:
-	scripts/release
-
-update:
-	scripts/update
-
-lint:
-	scripts/lint
+	scripts/make uninstall
\ No newline at end of file
diff --git a/README.md b/README.md
index b512837..044669e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
 # navi <img src="https://user-images.githubusercontent.com/3226564/65362934-b4432500-dbdf-11e9-8f75-815fbc5cbf8f.png" alt="icon" height="28px"/> [![CircleCI](https://circleci.com/gh/denisidoro/navi.svg?style=svg)](https://circleci.com/gh/denisidoro/navi) ![GitHub release (latest by date including pre-releases)](https://img.shields.io/github/v/release/denisidoro/navi?include_prereleases)
+  
+> :information_source: This project has recently been rewritten from bash to Rust. If you're facing any issue after updating, please check [this thread](https://github.com/denisidoro/navi/issues/201).
 
 > :information_source: This whole codebase is being rewritten in [Rust](https://www.rust-lang.org/). If you want to contribute, please refer to [this issue](https://github.com/denisidoro/navi/issues/154). :+1:
 
diff --git a/cheats/android.cheat b/cheats/android.cheat
index fbc02f1..b377378 100644
--- a/cheats/android.cheat
+++ b/cheats/android.cheat
@@ -24,4 +24,7 @@ $ device: adb devices --- --headers 1 --column 1
 # Start emulator
 "$ANDROID_HOME/tools/emulator" -avd <emulator> -netdelay none -netspeed full
 
+# TODO: remove this
+echo "$(ls -la)"
+
 $ emulator: "$ANDROID_HOME/tools/emulator" -list-avds
diff --git a/cheats/network.cheat b/cheats/network.cheat
index 2d69ba3..133d294 100644
--- a/cheats/network.cheat
+++ b/cheats/network.cheat
@@ -15,12 +15,13 @@ netstat -tn 2>/dev/null \
    | sort -nr \
    | head
 
-# Find external, public IP address
-dig +short myip.opendns.com @resolver1.opendns.com
-
 # Find primary, local IP address
 ifconfig \
   | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' \
   | grep -Eo '([0-9]*\.){3}[0-9]*' \
   | grep -v '127.0.0.1' \
   | tail -n1
+
+
+# Find external, public IP address
+dig +short myip.opendns.com @resolver1.opendns.com
\ No newline at end of file
diff --git a/navi b/navi
index bbeee3c..9fb406d 100755
--- a/navi
+++ b/navi
@@ -2,10 +2,15 @@
 set -euo pipefail
 
 export NAVI_HOME="$(cd "$(dirname "$0")" && pwd)"
-source "${NAVI_HOME}/src/main.sh"
+cd "$NAVI_HOME"
 
-VERSION="0.18.3"
-NAVI_ENV="${NAVI_ENV:-prod}"
+release_bin="${NAVI_HOME}/target/release/navi"
+debug_bin="${NAVI_HOME}/target/debug/navi"
 
-opts::eval "$@"
-main "$@"
+if [ -f "$release_bin" ]; then
+    "$release_bin" "$@"
+elif [ -f "$debug_bin" ]; then
+    "$debug_bin" "$@"
+else
+    cargo run -- "$@"
+fi
diff --git a/navi.plugin.bash b/navi.plugin.bash
deleted file mode 100644
index 5ee3757..0000000
--- a/navi.plugin.bash
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/usr/bin/env bash
-
-bind '"\C-g": " \C-u \C-a\C-k`printf \"\\e\" && NAVI_USE_FZF_ALL_INPUTS=true navi --print`\e\C-e\C-y\C-a\C-d\C-y\ey\C-h\C-e\C-b"'
diff --git a/navi.plugin.fish b/navi.plugin.fish
deleted file mode 100644
index 645dffd..0000000
--- a/navi.plugin.fish
+++ /dev/null
@@ -1,13 +0,0 @@
-function navi-widget -d "Show cheat sheets"
-  begin
-    stty sane
-    env NAVI_USE_FZF_ALL_INPUTS=true navi --print (commandline) | perl -pe 'chomp if eof' | read -lz result
-    and commandline -- $result
-  end
-  commandline -f repaint
-end
-
-bind \cg navi-widget
-if bind -M insert > /dev/null 2>&1
-  bind -M insert \cg navi-widget
-end
diff --git a/navi.plugin.zsh b/navi.plugin.zsh
deleted file mode 100644
index 60c2ea4..0000000
--- a/navi.plugin.zsh
+++ /dev/null
@@ -1,12 +0,0 @@
-_navi_path=$(dirname $0:A)
-
-_call_navi() {
-   local buff="$BUFFER"
-   zle kill-whole-line
-   local cmd="$(NAVI_USE_FZF_ALL_INPUTS=true "${_navi_path}/navi" --print <> /dev/tty)"
-   zle -U "${buff}${cmd}"
-}
-
-zle -N _call_navi
-
-bindkey '^g' _call_navi
diff --git a/scripts/action b/scripts/action
new file mode 100755
index 0000000..a9b2d50
--- /dev/null
+++ b/scripts/action
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+##? action release
+
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+source "${NAVI_HOME}/scripts/install"
+
+release() {
+
+    TAR_DIR="${NAVI_HOME}/target/tar"
+
+    target="${1:-}"
+    if [[ $target == *"osx"* ]]; then
+        echoerr "OSX cross-compile is impossible. Fallbacking to cargo..."
+        target=""
+    fi
+
+    cd "$NAVI_HOME"
+
+    rm -rf "${NAVI_HOME}/target" 2> /dev/null || true
+
+    if [ -n "$target" ]; then
+        cargo install cross 2> /dev/null || true
+        cross build --release --locked --target "$target"
+        bin_folder="${target}/release"
+    else 
+        cargo build --release --locked
+        bin_folder="release"
+    fi
+
+    bin_path="${NAVI_HOME}/target/${bin_folder}/navi"
+    chmod +x "$bin_path"
+    mkdir -p "$TAR_DIR" 2> /dev/null || true
+
+    cp -r "${NAVI_HOME}/cheats" "$TAR_DIR"
+    cp -r "${NAVI_HOME}/shell" "$TAR_DIR"
+    cp "$bin_path" "$TAR_DIR"
+
+    cd "${NAVI_HOME}/target/tar"
+    tar -czf navi.tar.gz *
+
+}
+
+cmd="$1"
+shift
+
+case "$cmd" in
+    "release") release "$@" ;;
+esac
diff --git a/scripts/brew b/scripts/brew
new file mode 100755
index 0000000..e292121
--- /dev/null
+++ b/scripts/brew
@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+##? brew formula
+
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+source "${NAVI_HOME}/scripts/install"
+
+gen_formula() {
+    version="$(latest_version_released)"
+    header "version: ${version}"
+
+    header "sha_for linux-amd64..."
+    sha_linux="$(sha_for_asset_on_github "$version" "linux-amd64")"
+
+    header "sha_for macos-amd64..."
+    sha_osx="$(sha_for_asset_on_github "$version" "macos-amd64")"
+
+    header "rb..."
+    curl -s https://raw.githubusercontent.com/denisidoro/homebrew-tools/master/navirs.rb \
+        | sed -E "s/version ['\"].*/version '${version}'/" \
+        | awk '!x{x=sub("sha256","sha_osx")}7' \
+        | awk '!x{x=sub("sha256","sha_linux")}7' \
+        | sed -E "s/sha_osx.*/sha256 \"${sha_osx}\"/" \
+        | sed -E "s/sha_linux.*/sha256 \"${sha_linux}\"/"
+}
+
+cmd="$1"
+shift
+
+case "$cmd" in
+    "formula") gen_formula "$@" ;;
+esac
diff --git a/scripts/docker b/scripts/docker
index 87278e1..e5319a1 100755
--- a/scripts/docker
+++ b/scripts/docker
@@ -1,18 +1,11 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-debian="${1:-false}"
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
 
-if $debian; then
-   image="debian"
-   setup_cmd="apt update; apt install -y git curl;"
-else
-   image="ellerbrock/alpine-bash-git"
-fi
+cd "$NAVI_HOME"
 
 docker run \
-   -it \
-   --entrypoint /bin/bash \
-   -v "$(pwd):/navi" \
-   "$image" \
-   -c "${setup_cmd:-}git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf && yes | ~/.fzf/install; export PATH=$PATH:/navi; bash"
\ No newline at end of file
+    -e HOMEBREW_NO_AUTO_UPDATE=1 \
+    -it linuxbrew/alpine \
+    bash -c 'brew install denisidoro/tools/navirs; bash'
diff --git a/scripts/fix b/scripts/fix
new file mode 100755
index 0000000..0d927ab
--- /dev/null
+++ b/scripts/fix
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+
+cargo +nightly fix --clippy -Z unstable-options 2> /dev/null || true
+cargo fix 2> /dev/null || true
+cargo fmt 2> /dev/null || true
diff --git a/scripts/install b/scripts/install
index e58b4b6..a8b7675 100755
--- a/scripts/install
+++ b/scripts/install
@@ -1,15 +1,126 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+FIRST_INSTALL_DIR="/opt/navi"
+SECOND_INSTALL_DIR="${HOME}/.navi"
 
-script() {
-   echo "#!/usr/bin/env bash"
-   echo "${NAVI_HOME}/navi" '"$@"'
+get_install_dir() {
+   local -r useless_folder="${FIRST_INSTALL_DIR}/useless"
+   local folder
+   mkdir -p "$useless_folder" 2>/dev/null \
+      && folder="$FIRST_INSTALL_DIR" \
+      || folder="$SECOND_INSTALL_DIR"
+   rm -r "$useless_folder" 2>/dev/null
+   echo "$folder"
 }
 
-folder="${1:-/usr/local/bin}"
-bin="${folder}/navi"
+echoerr() {
+   echo "$@" 1>&2
+}
 
-script > "$bin"
-chmod +x "$bin"
\ No newline at end of file
+command_exists() {
+   type "$1" &>/dev/null
+}
+
+sha256() {
+   if command_exists sha256sum; then
+      sha256sum
+   elif command_exists shasum; then
+      shasum -a 256
+   elif command_exists openssl; then
+      openssl dgst -sha256
+   else
+      echoerr "Unable to calculate sha256!"
+      exit 43
+   fi
+}
+
+header() {
+   echoerr "$*"
+   echoerr
+}
+
+latest_version_released() {
+   curl -s 'https://api.github.com/repos/denisidoro/navi/releases/latest' \
+      | grep -Eo 'releases/tag/v([0-9\.]+)' \
+      | sed 's|releases/tag/v||'
+}
+
+asset_url() {
+    local -r version="$1"
+    local -r variant="$2"
+   
+    echo "https://github.com/denisidoro/navi/releases/download/v${version}/navi-${variant}.tar.gz"
+}
+
+download_asset() {
+   local -r url="$(asset_url "$@")"
+   mkdir -p "$DEFAULT_INSTALL_DIR"
+   cd "$DEFAULT_INSTALL_DIR"
+   rm -f navi.tar.gz
+   echoerr "Downloading $url"
+   curl -L "$url" -o navi.tar.gz
+   tar xvzf navi.tar.gz
+   rm -f navi.tar.gz
+   ln -s "${DEFAULT_INSTALL_DIR}/navi" "/usr/bin/navi" \
+      || ln -s "${DEFAULT_INSTALL_DIR}/navi" "/usr/local/bin/navi"
+}
+
+sha_for_asset_on_github() {
+    local -r url="$(asset_url "$@")"
+    curl -sL "$url" | sha256 | awk '{print $1}'
+}
+
+get_target() {
+   local -r unamea="$(uname -a)"
+   local -r archi="$(uname -sm)"
+   local is_android
+
+   [[ $unamea = *Android* ]] && is_android=true || is_android=false
+
+   local target
+   case "$archi" in
+      Darwin*) target="x86_64-osx" ;;
+      Linux\ *64) target="x86_64-unknown-linux-musl" ;;
+      *arm*) target="armv7-unknown-linux-musleabihf" ;;
+      *) target="" ;;
+   esac
+
+   echo "$target"
+}
+
+no_binary_warning() {
+   echoerr "There's no precompiled binary for your platform: $(uname -a)"
+}
+
+get_shell() {
+   echo $SHELL | xargs basename
+}
+
+install_navi() {
+   export DEFAULT_INSTALL_DIR="$(get_install_dir)"
+   local -r target="$(get_target)"
+   if [[ -n "$target" ]]; then
+      local -r version="$(latest_version_released)"
+      download_asset "$version" "$target"
+   elif command_exists cargo; then
+      no_binary_warning
+      echoerr "Building sources..."
+      git clone https://github.com/denisidoro/navi "$DEFAULT_INSTALL_DIR"
+      cd "$DEFAULT_INSTALL_DIR"
+      make install
+   else
+      no_binary_warning 
+      echoerr "You don't have the necessary tools to build it"
+      echoerr "Please open an issue at https://github.com/denisidoro/navi"
+      echoerr "Aborting..."
+      exit 33
+   fi
+
+   local -r shell="$(get_shell)"
+   echoerr -e "Finished. To call navi, restart your shell or reload the config file:\n   source ~/.${shell}rc"
+   echoerr -e "\nTo add the Ctrl-G keybinding, add the following to ~/.${shell}rc:\n   source \"$(navi widget ${shell})\""
+   return 0
+}
+
+(return 0 2>/dev/null) || install_navi "$@"
diff --git a/scripts/lint b/scripts/lint
deleted file mode 100755
index 5952fca..0000000
--- a/scripts/lint
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-# please refer to https://github.com/denisidoro/dotfiles/blob/master/scripts/code/beautify
-
-export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
-
-files_to_lint() {
-   find . -iname '*.sh'
-   find scripts/*
-   echo "${NAVI_HOME}/test/run"
-   echo "${NAVI_HOME}/navi"
-}
-
-for f in $(files_to_lint); do
-   dot code beautify "$f"
-done
diff --git a/scripts/make b/scripts/make
new file mode 100755
index 0000000..ea7758d
--- /dev/null
+++ b/scripts/make
@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+##? make install
+##? make uninstall
+
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+source "${NAVI_HOME}/scripts/install"
+
+install() {
+    "${NAVI_HOME}/scripts/action" release
+    ln -s "${NAVI_HOME}/target/tar/navi" /usr/bin/navi \
+        || ln -s "${NAVI_HOME}/target/tar/navi" /usr/local/bin/navi
+}
+
+uninstall() {
+    rm -rf "${NAVI_HOME}/target"
+    rm /usr/local/bin/navi || rm /usr/bin/navi
+}
+
+cmd="$1"
+shift
+
+case "$cmd" in
+    "install") install "$@" ;;
+    "uninstall") uninstall "$@" ;;
+esac
diff --git a/scripts/playground b/scripts/playground
deleted file mode 100755
index 5ca41bb..0000000
--- a/scripts/playground
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
-export NAVI_PATH="${NAVI_HOME}/test:${NAVI_HOME}/cheats"
-
-"${NAVI_HOME}/navi" "$@"
\ No newline at end of file
diff --git a/scripts/release b/scripts/release
deleted file mode 100755
index d82a0dc..0000000
--- a/scripts/release
+++ /dev/null
@@ -1,52 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
-source "${NAVI_HOME}/src/main.sh"
-
-sha256() {
-   if command_exists sha256sum; then
-      sha256sum
-   elif command_exists shasum; then
-      shasum -a 256
-   elif command_exists openssl; then
-      openssl dgst -sha256
-   else
-      echoerr "Unable to calculate sha256!"
-      exit 43
-   fi
-}
-
-header() {
-   echo "$*"
-   echo
-}
-
-cd "$NAVI_HOME"
-
-header "git pull"
-git pull
-
-version="$(grep VERSION "${NAVI_HOME}/navi" | grep -Eo '[0-9\.]+')"
-tag="v${version}"
-tar="https://github.com/denisidoro/navi/archive/${tag}.tar.gz"
-formula="/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/navi.rb"
-
-header "Attempting to release version ${tag}..."
-read -p "Press enter to continue"
-
-header "git tag"
-git tag -a "$tag" -m "$tag"
-
-header "git push"
-git push --follow-tags
-
-header "rm formula"
-rm "$formula" 2>/dev/null || true
-
-header "tar sha256"
-sha="$(curl -sL "$tar" | sha256 | awk '{print $1}')"
-
-header "output"
-echo "  url \"${tar}\""
-echo "  sha256 \"${sha}\""
\ No newline at end of file
diff --git a/scripts/run b/scripts/run
new file mode 100755
index 0000000..93198d4
--- /dev/null
+++ b/scripts/run
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+
+cd "$NAVI_HOME"
+rm -rf "target/release/navi" 2> /dev/null || true
+rm -rf "target/debug/navi" 2> /dev/null || true
+cargo run -- "$@"
diff --git a/scripts/tag b/scripts/tag
new file mode 100755
index 0000000..cd89a56
--- /dev/null
+++ b/scripts/tag
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
+
+version="$1"
+
+git tag -a "v${version}" -m 'WIP version written in Rust. Use 1.0.0 instead'
+git push origin --tags
diff --git a/scripts/uninstall b/scripts/uninstall
deleted file mode 100755
index 1a90c6a..0000000
--- a/scripts/uninstall
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-BIN="/usr/local/bin/navi"
-rm -rf "$BIN" || true
\ No newline at end of file
diff --git a/scripts/update b/scripts/update
deleted file mode 100755
index a448a42..0000000
--- a/scripts/update
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
-
-cd "$NAVI_HOME"
-
-git pull
-"${NAVI_HOME}/scripts/install" || true
diff --git a/shell/navi.plugin.bash b/shell/navi.plugin.bash
new file mode 100644
index 0000000..138ec3b
--- /dev/null
+++ b/shell/navi.plugin.bash
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+__call_navi() {
+    local -r f="$(mktemp || echo "${HOME}/.naviresult")"
+    navi  --save "$f" </dev/tty >/dev/tty
+    local -r r="$(cat "$f")"
+    rm "$f" 2> /dev/null || true
+    echo "$r"
+}
+
+bind '"\C-g": " \C-b\C-k \C-u`__call_navi`\e\C-e\C-a\C-y\C-h\C-e\e \C-y\ey\C-x\C-x\C-f"'
\ No newline at end of file
diff --git a/shell/navi.plugin.fish b/shell/navi.plugin.fish
new file mode 100644
index 0000000..49ca20b
--- /dev/null
+++ b/shell/navi.plugin.fish
@@ -0,0 +1,23 @@
+#!/usr/bin/env fish
+
+function __call_navi
+    set -l f (mktemp || echo "${HOME}/.naviresult")
+    navi --save "$f" </dev/tty >/dev/tty
+    set -l r (cat "$f")
+    rm "$f" 2> /dev/null || true
+    echo "$r"
+end 
+
+function navi-widget -d "Show cheat sheets"
+  begin
+    stty sane
+    __call_navi | perl -pe 'chomp if eof' | read -lz result
+    and commandline -- $result
+  end
+  commandline -f repaint
+end
+
+bind \cg navi-widget
+if bind -M insert > /dev/null 2>&1
+  bind -M insert \cg navi-widget
+end
diff --git a/shell/navi.plugin.zsh b/shell/navi.plugin.zsh
new file mode 100644
index 0000000..c9f2de4
--- /dev/null
+++ b/shell/navi.plugin.zsh
@@ -0,0 +1,15 @@
+#!/usr/bin/env zsh
+
+_call_navi() {
+   local -r buff="$BUFFER"
+   local -r f="$(mktemp || echo "${HOME}/.naviresult")" 2>/dev/null
+   navi --save "$f" </dev/tty >/dev/tty
+   local -r r="$(cat "$f")" 2>/dev/null
+   rm "$f" 2> /dev/null || true
+   zle kill-whole-line
+   zle -U "${buff}${r}"
+}
+
+zle -N _call_navi
+
+bindkey '^g' _call_navi
diff --git a/src/arg.sh b/src/arg.sh
deleted file mode 100644
index 6fd2afc..0000000
--- a/src/arg.sh
+++ /dev/null
@@ -1,117 +0,0 @@
-#!/usr/bin/env bash
-
-ARG_REGEX="<[a-zA-Z_]+([- ]?\w+)*>"
-
-arg::dict() {
-   local -r input="$(cat)"
-
-   local -r fn="$(echo "$input" | awk -F'---' '{print $1}')"
-   local -r opts="$(echo "$input" | awk -F'---' '{print $2}')"
-
-   dict::new fn "$fn" opts "$opts"
-}
-
-arg::escape() {
-   echo "$*" \
-      | tr '-' '_' \
-      | tr ' ' '_'
-}
-
-arg::interpolate() {
-   local -r arg="$1"
-   local -r value="$(echo "$2" | tr "$ESCAPE_CHAR_3" '\n')"
-
-   local -r lines="$(echo "$value" | wc -l)"
-
-   if [ $lines -lt 2 ]; then
-
-      local -r words="$(echo "$value" | wc -w | xargs)"
-
-      if [[ $words > 1 ]]; then
-         sed "s|<${arg}>|\"${value}\"|g"
-      else
-         sed "s|<${arg}>|${value}|g"
-      fi
-
-   else
-
-      local -r newvalue="$(echo "$value" \
-         | xargs -I% echo '"%"' \
-         | tr '\n' ' ')"
-
-      sed "s|<${arg}>|${newvalue}|g"
-
-   fi
-}
-
-arg::next() {
-   grep -Eo "$ARG_REGEX" \
-      | head -n1 \
-      | tr -d '<' \
-      | tr -d '>'
-}
-
-arg::deserialize() {
-   local arg="${1:-}"
-
-   arg="${arg:1:${#arg}-2}"
-   echo "$arg" \
-      | tr "${ESCAPE_CHAR}" " " \
-      | tr "${ESCAPE_CHAR_2}" "'" \
-      | tr "${ESCAPE_CHAR_3}" '"'
-}
-
-arg::serialize_code() {
-   printf "tr ' ' '${ESCAPE_CHAR}'"
-   printf " | "
-   printf "tr \"'\" '${ESCAPE_CHAR_2}'"
-   printf " | "
-   printf "tr '\"' '${ESCAPE_CHAR_3}'"
-}
-
-arg::pick() {
-   local -r arg="$1"
-   local -r cheat="$2"
-
-   local -r prefix="$ ${arg}:"
-   local -r length="$(echo "$prefix" | str::length)"
-   local -r arg_dict="$(echo "$cheat" | grep "$prefix" | str::sub $((length + 1)) | arg::dict)"
-
-   local -r fn="$(dict::get "$arg_dict" fn)"
-   local -r args_str="$(dict::get "$arg_dict" opts)"
-   local arg_name=""
-
-   for arg_str in $args_str; do
-      if [ -z $arg_name ]; then
-         arg_name="$(echo "$arg_str" | str::sub 2)"
-      else
-         eval "local $arg_name"='$arg_str'
-         arg_name=""
-      fi
-   done
-
-   if [ -n "$fn" ]; then
-      local suggestions="$(eval "$fn" 2>/dev/null)"
-
-      local args
-      args+=("--prompt"); args+=("${arg}: ")
-      args+=("--header-lines"); args+=("${headers:-0}")
-      if ${multi:-false}; then
-         args+=("-m")
-      fi
-
-      if [ -n "$suggestions" ]; then
-         echo "$suggestions" \
-            | ui::fzf ${args[@]:-} \
-            | str::column "${column:-}" "${separator:-}" \
-            | tr '\n' "$ESCAPE_CHAR_3"
-      fi
-   elif ${NAVI_USE_FZF_ALL_INPUTS:-false}; then
-      echo "" | ui::fzf --prompt "$arg: " --print-query --no-select-1 --height 1
-   else
-      printf "\033[0;36m${arg}:\033[0;0m " > /dev/tty
-      read -r value
-      ui::clear_previous_line > /dev/tty
-      printf "$value"
-   fi
-}
diff --git a/src/cheat.rs b/src/cheat.rs
new file mode 100644
index 0000000..6e8b864
--- /dev/null
+++ b/src/cheat.rs
@@ -0,0 +1,147 @@
+use crate::display;
+use crate::filesystem;
+use crate::option::Config;
+
+use regex::Regex;
+use std::collections::HashMap;
+use std::fs;
+use std::io::Write;
+
+pub struct SuggestionOpts {
+    pub header_lines: u8,
+    pub column: Option<u8>,
+    pub multi: bool,
+}
+
+pub type Value = (String, Option<SuggestionOpts>);
+
+fn gen_snippet(snippet: &str, line: &str) -> String {
+    if snippet.is_empty() {
+        line.to_string()
+    } else {
+        format!("{}{}", &snippet[..snippet.len() - 2], line)
+    }
+}
+
+fn parse_opts(text: &str) -> SuggestionOpts {
+    let mut header_lines: u8 = 0;
+    let mut column: Option<u8> = None;
+    let mut multi = false;
+
+    let mut parts = text.split(' ');
+
+    while let Some(p) = parts.next() {
+        match p {
+            "--multi" => multi = true,
+            "--header" | "--header-lines" => {
+                header_lines = parts.next().unwrap().parse::<u8>().unwrap()
+            }
+            "--column" => column = Some(parts.next().unwrap().parse::<u8>().unwrap()),
+            _ => (),
+        }
+    }
+
+    SuggestionOpts {
+        header_lines,
+        column,
+        multi,
+    }
+}
+
+fn parse_variable_line(line: &str) -> (&str, &str, Option<SuggestionOpts>) {
+    let re = Regex::new(r"^\$\s*([^:]+):(.*)").unwrap();
+    let caps = re.captures(line).unwrap();
+    let variable = caps.get(1).unwrap().as_str().trim();
+    let mut command_plus_opts = caps.get(2).unwrap().as_str().split("---");
+    let command = command_plus_opts.next().unwrap();
+    let opts = match command_plus_opts.next() {
+        Some(o) => Some(parse_opts(o)),
+        None => None,
+    };
+    (variable, command, opts)
+}
+
+fn read_file(
+    path: &str,
+    variables: &mut HashMap<String, Value>,
+    stdin: &mut std::process::ChildStdin,
+) {
+    let mut tags = String::from("");
+    let mut comment = String::from("");
+    let mut snippet = String::from("");
+
+    let (tag_width, comment_width) = display::widths();
+
+    if let Ok(lines) = filesystem::read_lines(path) {
+        for l in lines {
+            let line = l.unwrap();
+
+            // tag
+            if line.starts_with('%') {
+                tags = String::from(&line[2..]);
+            }
+            // comment
+            else if line.starts_with('#') {
+                comment = String::from(&line[2..]);
+            }
+            // variable
+            else if line.starts_with('$') {
+                let (variable, command, opts) = parse_variable_line(&line[..]);
+                variables.insert(
+                    format!("{};{}", tags, variable),
+                    (String::from(command), opts),
+                );
+            }
+            // snippet with line break
+            else if line.ends_with('\\') {
+                snippet = if !snippet.is_empty() {
+                    format!("{}{}", &snippet[..snippet.len() - 2], line)
+                } else {
+                    line
+                }
+            }
+            // blank
+            else if line.is_empty() {
+            }
+            // snippet
+            else {
+                let full_snippet = gen_snippet(&snippet, &line);
+                match stdin.write(
+                    display::format_line(
+                        &tags[..],
+                        &comment[..],
+                        &full_snippet[..],
+                        tag_width,
+                        comment_width,
+                    )
+                    .as_bytes(),
+                ) {
+                    Ok(_) => snippet = String::from(""),
+                    Err(_) => break,
+                }
+            }
+        }
+    }
+}
+
+pub fn read_all(config: &Config, stdin: &mut std::process::ChildStdin) -> HashMap<String, Value> {
+    let mut variables: HashMap<String, Value> = HashMap::new();
+
+    let fallback = format!("{}/cheats", filesystem::exe_path_string());
+    let folders_str = config.path.as_ref().unwrap_or(&fallback);
+    let folders = folders_str.split(':');
+
+    for folder in folders {
+        if let Ok(paths) = fs::read_dir(folder) {
+            for path in paths {
+                read_file(
+                    path.unwrap().path().into_os_string().to_str().unwrap(),
+                    &mut variables,
+                    stdin,
+                );
+            }
+        }
+    }
+
+    variables
+}
diff --git a/src/cheat.sh b/src/cheat.sh
deleted file mode 100755
index 84bf6ea..0000000
--- a/src/cheat.sh
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/usr/bin/env bash
-
-cheat::find() {
-   for path in $(echo "$NAVI_PATH" | tr ':' '\n'); do
-      find -L "${path/#\~/$HOME}" -iname '*.cheat'
-   done
-}
-
-cheat::export_cache() {
-   if [ -z "${NAVI_CACHE:-}" ]; then
-      export NAVI_CACHE="$*"
-   fi
-}
-
-cheat::join_lines() {
-   if command_exists perl; then
-      perl -0pe 's/\\\n *//g'
-   else
-      tr '\n' "$ESCAPE_CHAR" \
-         | sed -E 's/\\'$(printf "$ESCAPE_CHAR")' *//g' \
-         | tr "$ESCAPE_CHAR" '\n'
-   fi
-}
-
-cheat::read_all() {
-   for cheat in $(cheat::find); do
-      echo
-      cat "$cheat"
-      echo
-   done
-}
-
-cheat::memoized_read_all() {
-   if [ -n "${NAVI_CACHE:-}" ]; then
-      echo "$NAVI_CACHE"
-      return
-   fi
-
-   local -r cheats="$(cheat::read_all)"
-   echo "$cheats" \
-      | cheat::join_lines
-}
-
-cheat::prettify() {
-   local -r print="$(dict::get "$OPTIONS" print)"
-
-   local -r comment_width="$(style::comment_width)"
-   local -r snippet_width="$(style::snippet_width)"
-   local -r tag_width="$(style::tag_width)"
-
-   local -r comment_color="$(style::comment_color)"
-   local -r snippet_color="$(style::snippet_color)"
-   local -r tag_color="$(style::tag_color)"
-
-   local -r columns="$(ui::width || echo 0)"
-
-   awk \
-      -v COMMENT_COLOR=$comment_color \
-      -v SNIPPET_COLOR=$snippet_color \
-      -v TAG_COLOR=$tag_color \
-      -v COMMENT_MAX=$((columns * comment_width / 100)) \
-      -v SNIPPET_MAX=$((columns * snippet_width / 100)) \
-      -v TAG_MAX=$((columns * tag_width / 100)) \
-      -v SEP="$ESCAPE_CHAR_3" \
-      'function color(c,s,max) {
-           if (max > 0 && length(s) > max) {
-              s=substr(s, 0, max)
-              s=s"…"
-           }
-           printf("\033[%dm%s", c, s)
-        }
-
-      /^%/ { tags=substr($0, 3); next }
-      /^#/ { comment=substr($0, 3); next }
-      /^\$/ { next }
-   BEGIN { ORS="" }
-   NF {
-    print color(COMMENT_COLOR, comment, COMMENT_MAX)
-    print color(0, SEP, 0)
-    print color(SNIPPET_COLOR, $0, SNIPPET_MAX)
-    print color(0, SEP, 0)
-    print color(TAG_COLOR, tags, TAG_MAX);
-    print color(0, SEP, 0)
-    print color(DEFAULT, "\033", 0);
-    print "\n"
-    next
-   }'
-}
-
-cheat::until_percentage() {
-   awk 'BEGIN { count=0; }
-
-      /^%/ { if (count >= 1) exit;
-             else { count++; print $0; next; } }
-   { print $0 }'
-}
-
-cheat::from_tags() {
-   local -r cheats="$1"
-   local -r tags="$2"
-
-   echo "$cheats" \
-      | grep "% ${tags}" -A99999 \
-      | cheat::until_percentage
-}
-
-cheat::from_selection() {
-   local -r cheats="$1"
-   local -r selection="$2"
-
-   local -r tags="$(dict::get "$selection" tags)"
-
-   cheat::from_tags "$cheats" "$tags"
-}
diff --git a/src/clipboard.sh b/src/clipboard.sh
deleted file mode 100644
index 92eafc9..0000000
--- a/src/clipboard.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-
-clip::set() {
-   local -r input="${1:-}"
-
-   if command_exists pbcopy; then
-      echo "$input" | pbcopy
-   elif command_exists clip.exe; then
-      echo "$input" | clip.exe
-   elif command_exists xclip; then
-      echo "$input" | xclip -sel clip
-   elif command_exists xsel; then
-      echo "$input" | xsel -i -b
-   else
-      echo "$input"
-      die "Unable to set clipboard"
-   fi
-}
\ No newline at end of file
diff --git a/src/cmd.sh b/src/cmd.sh
deleted file mode 100644
index f0bdd8e..0000000
--- a/src/cmd.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/usr/bin/env bash
-
-cmd::escape() {
-   tr '\\' "$ESCAPE_CHAR_3"
-}
-
-cmd::unescape() {
-   tr "$ESCAPE_CHAR_3" '\\'
-}
-
-cmd::loop() {
-   local -r cmd="$1"
-   local -r cheat="$2"
-
-   local arg escaped_arg value escaped_cmd
-
-   arg="$(echo "$cmd" | arg::next)"
-   if [ -z "$arg" ]; then
-      dict::new cmd "$cmd"
-      return
-   fi
-
-   escaped_arg="$(arg::escape "$arg")"
-
-   escaped_cmd="$(echo "$cmd" | sed "s|<${arg}>|<${escaped_arg}>|g")"
-   arg="$escaped_arg"
-
-   local -r values="$(dict::get "$OPTIONS" values)"
-   value="$(echo "$values" | coll::get $i)"
-   [ -z "$value" ] && value="$(arg::pick "$arg" "$cheat")"
-
-   dict::new \
-      cmd "${escaped_cmd:-}" \
-      value "$value" \
-      arg "$arg"
-}
-
-cmd::finish() {
-   local -r cmd="$(echo "$1" | cmd::unescape)"
-   local -r selection="${2:-}"
-
-   local -r key="$(selection::key "$selection")"
-   local -r unresolved_arg="$(echo "$cmd" | arg::next)"
-
-   local -r print="$(dict::get "$OPTIONS" print)"
-   if [[ "$key" = "ctrl-y" ]]; then
-      clip::set "$cmd"
-   elif $print || [ -n "$unresolved_arg" ]; then
-      echo "$cmd" | ui::remove_dep_order
-   else
-      eval "$cmd"
-   fi
-}
\ No newline at end of file
diff --git a/src/cmds/aux.rs b/src/cmds/aux.rs
new file mode 100644
index 0000000..2662715
--- /dev/null
+++ b/src/cmds/aux.rs
@@ -0,0 +1,16 @@
+use std::error::Error;
+use std::process;
+
+pub fn abort(operation: &str, issue_number: u32) -> Result<(), Box<dyn Error>> {
+    eprintln!("This version of navi doesn't support {}.", operation);
+    eprintln!(
+        "Please check https://github.com/denisidoro/navi/issues/{} for more info.",
+        issue_number
+    );
+    eprintln!("");
+    eprintln!("You were probably using the bash implementation of navi and are now using the Rust one, which isn't feature complete yet.");
+    eprintln!("In the near future, the Rust version will have all previous features.");
+    eprintln!("");
+    eprintln!("I'm sorry for the inconvenience.");
+    process::exit(42)
+}
diff --git a/src/cmds/best.rs b/src/cmds/best.rs
new file mode 100644
index 0000000..bec3dd7
--- /dev/null
+++ b/src/cmds/best.rs
@@ -0,0 +1,13 @@
+use std::error::Error;
+
+use crate::cmds;
+use crate::cmds::core::Variant;
+use crate::option::Config;
+
+pub fn main(query: String, args: Vec<String>, config: Config) -> Result<(), Box<dyn Error>> {
+    if !args.is_empty() {
+        cmds::aux::abort("passing arguments to 'navi best'", 201)
+    } else {
+        cmds::core::main(Variant::Filter(query), config)
+    }
+}
diff --git a/src/cmds/core.rs b/src/cmds/core.rs
new file mode 100644
index 0000000..3922dba
--- /dev/null
+++ b/src/cmds/core.rs
@@ -0,0 +1,163 @@
+use crate::cheat;
+use crate::cmds;
+use crate::display;
+use crate::fzf;
+use crate::option::Config;
+
+use regex::Regex;
+use std::collections::HashMap;
+use std::error::Error;
+use std::fs;
+use std::io::Write;
+use std::process;
+use std::process::{Command, Stdio};
+
+pub enum Variant {
+    Core,
+    Filter(String),
+    Query(String),
+}
+
+fn gen_core_fzf_opts(variant: Variant, config: &Config) -> fzf::Opts {
+    let mut opts = fzf::Opts {
+        preview: !config.no_preview,
+        autoselect: !config.no_autoselect,
+        overrides: config.fzf_overrides.as_ref(),
+        copyable: true,
+        ..Default::default()
+    };
+
+    match variant {
+        Variant::Core => (),
+        Variant::Filter(f) => opts.filter = Some(f),
+        Variant::Query(q) => opts.query = Some(q),
+    }
+
+    opts
+}
+
+fn extract_from_selections(raw_output: &str) -> (&str, &str, &str) {
+    let mut lines = raw_output.split('\n');
+    let key = lines.next().unwrap();
+    let mut parts = lines.next().unwrap().split('\t');
+    parts.next();
+    parts.next();
+    parts.next();
+    let tags = parts.next().unwrap();
+    parts.next();
+    let snippet = parts.next().unwrap();
+    (key, tags, snippet)
+}
+
+fn prompt_with_suggestions(config: &Config, suggestion: &cheat::Value) -> String {
+    let child = Command::new("bash")
+        .stdout(Stdio::piped())
+        .arg("-c")
+        .arg(&suggestion.0)
+        .spawn()
+        .unwrap();
+
+    let suggestions = String::from_utf8(child.wait_with_output().unwrap().stdout).unwrap();
+
+    let mut opts = fzf::Opts {
+        preview: false,
+        autoselect: !config.no_autoselect,
+        ..Default::default()
+    };
+
+    if let Some(o) = &suggestion.1 {
+        opts.multi = o.multi;
+        opts.header_lines = o.header_lines;
+        opts.nth = o.column;
+    };
+
+    let (output, _) = fzf::call(opts, |stdin| {
+        stdin.write_all(suggestions.as_bytes()).unwrap();
+        None
+    });
+
+    String::from_utf8(output.stdout).unwrap()
+}
+
+fn prompt_without_suggestions(varname: &str) -> String {
+    let opts = fzf::Opts {
+        preview: false,
+        autoselect: false,
+        suggestions: false,
+        prompt: Some(display::variable_prompt(varname)),
+        ..Default::default()
+    };
+
+    let (output, _) = fzf::call(opts, |_stdin| None);
+
+    String::from_utf8(output.stdout).unwrap()
+}
+
+fn gen_replacement(value: &str) -> String {
+    if value.contains(' ') {
+        format!("\"{}\"", &value[..value.len() - 1])
+    } else {
+        value[..value.len() - 1].to_string()
+    }
+}
+
+fn replace_variables_from_snippet(
+    snippet: &str,
+    tags: &str,
+    variables: HashMap<String, cheat::Value>,
+    config: &Config,
+) -> String {
+    let mut interpolated_snippet = String::from(snippet);
+
+    let re = Regex::new(r"<(\w[\w\d\-_]*)>").unwrap();
+    for cap in re.captures_iter(snippet) {
+        let bracketed_varname = &cap[0];
+        let varname = &bracketed_varname[1..bracketed_varname.len() - 1];
+        let k = format!("{};{}", tags, varname);
+
+        let value = match variables.get(&k[..]) {
+            Some(suggestion) => prompt_with_suggestions(&config, suggestion),
+            None => prompt_without_suggestions(varname),
+        };
+
+        interpolated_snippet =
+            interpolated_snippet.replace(bracketed_varname, gen_replacement(&value[..]).as_str());
+    }
+
+    interpolated_snippet
+}
+
+pub fn main(variant: Variant, config: Config) -> Result<(), Box<dyn Error>> {
+    let (output, variables) = fzf::call(gen_core_fzf_opts(variant, &config), |stdin| {
+        Some(cheat::read_all(&config, stdin))
+    });
+
+    match output.status.code() {
+        Some(0) => {
+            let raw_output = String::from_utf8(output.stdout)?;
+            let (key, tags, snippet) = extract_from_selections(&raw_output[..]);
+            let interpolated_snippet =
+                replace_variables_from_snippet(snippet, tags, variables.unwrap(), &config);
+
+            if key == "ctrl-y" {
+                cmds::aux::abort("copying snippets to the clipboard", 201)?
+            } else if config.print {
+                println!("{}", interpolated_snippet);
+            } else if let Some(s) = config.save {
+                fs::write(s, interpolated_snippet)?;
+            } else {
+                Command::new("bash")
+                    .arg("-c")
+                    .arg(&interpolated_snippet[..])
+                    .spawn()?;
+            }
+
+            Ok(())
+        }
+        Some(130) => process::exit(130),
+        _ => {
+            let err = String::from_utf8(output.stderr)?;
+            panic!("External command failed:\n {}", err)
+        }
+    }
+}
diff --git a/src/cmds/func.rs b/src/cmds/func.rs
new file mode 100644
index 0000000..8035eca
--- /dev/null
+++ b/src/cmds/func.rs
@@ -0,0 +1,7 @@
+use std::error::Error;
+
+use super::aux;
+
+pub fn main(_func: String, _args: Vec<String>) -> Result<(), Box<dyn Error>> {
+    aux::abort("calling `navi fn`", 201)
+}
diff --git a/src/cmds/home.rs b/src/cmds/home.rs
new file mode 100644
index 0000000..cbcdfb1
--- /dev/null
+++ b/src/cmds/home.rs
@@ -0,0 +1,8 @@
+use std::error::Error;
+
+use crate::filesystem;
+
+pub fn main() -> Result<(), Box<dyn Error>> {
+    println!("{}", filesystem::exe_path_string());
+    Ok(())
+}
diff --git a/src/cmds/mod.rs b/src/cmds/mod.rs
new file mode 100644
index 0000000..1c7a920
--- /dev/null
+++ b/src/cmds/mod.rs
@@ -0,0 +1,9 @@
+pub mod aux;
+pub mod best;
+pub mod core;
+pub mod func;
+pub mod home;
+pub mod preview;
+pub mod query;
+pub mod search;
+pub mod shell;
diff --git a/src/cmds/preview.rs b/src/cmds/preview.rs
new file mode 100644
index 0000000..c90b6d1
--- /dev/null
+++ b/src/cmds/preview.rs
@@ -0,0 +1,18 @@
+use std::error::Error;
+use std::process;
+
+use crate::display;
+
+fn extract_elements(argstr: &str) -> (&str, &str, &str) {
+    let mut parts = argstr.split('\t').skip(3);
+    let tags = parts.next().unwrap();
+    let comment = parts.next().unwrap();
+    let snippet = parts.next().unwrap();
+    (tags, comment, snippet)
+}
+
+pub fn main(line: String) -> Result<(), Box<dyn Error>> {
+    let (tags, comment, snippet) = extract_elements(&line[..]);
+    display::preview(comment, tags, snippet);
+    process::exit(0)
+}
diff --git a/src/cmds/query.rs b/src/cmds/query.rs
new file mode 100644
index 0000000..12a6571
--- /dev/null
+++ b/src/cmds/query.rs
@@ -0,0 +1,9 @@
+use std::error::Error;
+
+use crate::cmds;
+use crate::cmds::core::Variant;
+use crate::option::Config;
+
+pub fn main(query: String, config: Config) -> Result<(), Box<dyn Error>> {
+    cmds::core::main(Variant::Query(query), config)
+}
diff --git a/src/cmds/search.rs b/src/cmds/search.rs
new file mode 100644
index 0000000..1f334ce
--- /dev/null
+++ b/src/cmds/search.rs
@@ -0,0 +1,8 @@
+use std::error::Error;
+
+use super::aux;
+use crate::option::Config;
+
+pub fn main(_query: String, _config: Config) -> Result<(), Box<dyn Error>> {
+    aux::abort("searching for cheats online", 201)
+}
diff --git a/src/cmds/shell.rs b/src/cmds/shell.rs
new file mode 100644
index 0000000..beaa72b
--- /dev/null
+++ b/src/cmds/shell.rs
@@ -0,0 +1,15 @@
+use std::error::Error;
+
+use crate::filesystem;
+
+pub fn main(shell: &str) -> Result<(), Box<dyn Error>> {
+    let file = match shell {
+        "zsh" => "navi.plugin.zsh",
+        "fish" => "navi.plugin.fish",
+        _ => "navi.plugin.bash",
+    };
+
+    println!("{}/shell/{}", filesystem::exe_path_string(), file);
+
+    Ok(())
+}
diff --git a/src/coll.sh b/src/coll.sh
deleted file mode 100644
index af2071e..0000000
--- a/src/coll.sh
+++ /dev/null
@@ -1,84 +0,0 @@
-#!/usr/bin/env bash
-
-coll::new() {
-   for x in "$@"; do
-      echo "$x"
-   done
-}
-
-coll::first() {
-   head -n1
-}
-
-coll::rest() {
-   tail -n +2
-}
-
-coll::map() {
-   local -r fn="$1"
-
-   for x in $(cat); do
-      "$fn" "$x"
-   done
-}
-
-coll::filter() {
-   local -r pred="$1"
-
-   for x in $(cat); do
-      "$pred" "$x" && echo "$x" || true
-   done
-}
-
-coll::remove() {
-   local -r pred="$1"
-
-   for x in $(cat); do
-      "$pred" "$x" || echo "$x"
-   done
-}
-
-coll::without_empty_line() {
-   local -r input="$(cat)"
-   local -r words="$(echo "$input" | wc -w | xargs)"
-   if [[ $words > 0 ]]; then
-      echo "$input"
-   fi
-}
-
-coll::add() {
-   cat | coll::without_empty_line
-   for x in "$@"; do
-      echo "$x"
-   done
-}
-
-coll::reverse() {
-   str::reverse_lines "$@"
-}
-
-coll::set() {
-   sort -u
-}
-
-coll::get() {
-   local n="$1"
-   n=$((n+1))
-   sed "${n}q;d"
-}
-
-# TODO: implement tailrec
-coll::reduce() {
-   local -r fn="$1"
-   local state="$2"
-
-   local -r coll="$(cat)"
-   local -r x="$(echo "$coll" | coll::first)"
-
-   if [ -z "$x" ]; then
-      echo "$state"
-   else
-      local -r new_state="$("$fn" "$state" "$x")"
-      echo "$coll" | coll::rest | coll::reduce "$fn" "$new_state"
-   fi
-}
\ No newline at end of file
diff --git a/src/dict.sh b/src/dict.sh
deleted file mode 100644
index df5f6ab..0000000
--- a/src/dict.sh
+++ /dev/null
@@ -1,113 +0,0 @@
-#!/usr/bin/env bash
-
-# for an explanation behind this namespace, please check
-# https://medium.com/@den.isidoro/dictionaries-in-shell-scripts-61d34e1c91c6
-
-# LIMITATIONS:
-# values with non-trivial whitespaces (newlines, subsequent spaces, etc)
-# aren't handled very well
-
-dict::new() {
-   if [ $# = 0 ]; then
-      echo ""
-   else
-      echo "" | dict::assoc "$@" | str::remove_empty_lines
-   fi
-}
-
-dict::dissoc() {
-   local -r key="$1"
-
-   grep -Ev "^[\s]*${key}[^:]*:"
-}
-
-dict::escape_value() {
-   tr '\n' "$ESCAPE_CHAR" | sed 's/\\n/'$(printf "$ESCAPE_CHAR")'/g'
-}
-
-str::without_trailing_newline() {
-   printf "%s" "$(cat)"
-   echo
-}
-
-dict::unescape_value() {
-   tr "$ESCAPE_CHAR" '\n' | str::without_trailing_newline
-}
-
-dict::assoc() {
-   local -r key="${1:-}"
-   local -r input="$(cat)"
-
-   if [ -z $key ]; then
-      printf "$(echo "$input" | tr '%' "$ESCAPE_CHAR_2")" | tr "$ESCAPE_CHAR_2" '%'
-      return
-   fi
-
-   local -r value="$(echo "${2:-}" | dict::escape_value)"
-
-   shift 2
-   echo "$(echo "$input" | dict::dissoc "$key")${key}: ${value}\n" | dict::assoc "$@"
-}
-
-dict::get() {
-   if [ $# = 1 ]; then
-      local -r input="$(cat)"
-      local -r key="$1"
-   else
-      local -r input="$1"
-      local -r key="$2"
-   fi
-
-   local -r prefix="${key}[^:]*: "
-   local -r result="$(echo "$input" | grep -E "^${prefix}")"
-   local -r matches="$(echo "$result" | wc -l || echo 0)"
-
-   if [ $matches -gt 1 ]; then
-      echo "$result" | dict::unescape_value
-   else
-      echo "$result" | sed -E "s/${prefix}//" | dict::unescape_value
-   fi
-}
-
-dict::keys() {
-   grep -Eo '^[^:]+: ' \
-      | sed 's/: //g'
-}
-
-dict::values() {
-   awk -F':' '{$1=""; print $0}' \
-      | cut -c3-
-}
-
-dict::zipmap() {
-   IFS='\n'
-
-   local -r keys_str="$1"
-   local -r values_str="$2"
-
-   keys=()
-   values=()
-   for key in $keys_str; do
-      keys+=("$key")
-   done
-   for value in $values_str; do
-      values+=("$value")
-   done
-
-   for ((i=0; i<${#keys[@]}; ++i)); do
-      if [ -n "${keys[i]}" ]; then
-         echo "${keys[i]}: ${values[i]}"
-      fi
-   done
-}
-
-dict::update() {
-   local -r key="$1"
-   local -r fn="$2"
-   local -r input="$(cat)"
-
-   local -r value="$(echo "$input" | dict::get "$key")"
-   local -r updated_value="$("$fn" "$value")"
-
-   echo "$input" | dict::assoc "$key" "$updated_value"
-}
\ No newline at end of file
diff --git a/src/display.rs b/src/display.rs
new file mode 100644
index 0000000..c786e89
--- /dev/null
+++ b/src/display.rs
@@ -0,0 +1,56 @@
+use termion::{color, terminal_size};
+
+static COMMENT_COLOR: color::LightCyan = color::LightCyan;
+static TAG_COLOR: color::LightGreen = color::LightGreen;
+static SNIPPET_COLOR: color::White = color::White;
+
+pub fn widths() -> (usize, usize) {
+    let full_width = terminal_size().unwrap().0;
+    let tag_width = full_width * 10 / 100;
+    let comment_width = full_width * 50 / 100;
+    (usize::from(tag_width), usize::from(comment_width))
+}
+
+pub fn variable_prompt(varname: &str) -> String {
+    format!("{}: ", varname)
+}
+
+pub fn preview(comment: &str, tags: &str, snippet: &str) {
+    println!(
+        "{comment_color}{comment} {tag_color}{tags} \n{snippet_color}{snippet}",
+        comment = format!("# {}", comment),
+        tags = format!("[{}]", tags),
+        snippet = snippet,
+        comment_color = color::Fg(COMMENT_COLOR),
+        tag_color = color::Fg(TAG_COLOR),
+        snippet_color = color::Fg(SNIPPET_COLOR),
+    );
+}
+
+fn limit_str(text: &str, length: usize) -> String {
+    if text.len() > length {
+        format!("{}…", &text[..length - 1])
+    } else {
+        format!("{:width$}", text, width = length)
+    }
+}
+
+pub fn format_line(
+    tags: &str,
+    comment: &str,
+    full_snippet: &str,
+    tag_width: usize,
+    comment_width: usize,
+) -> String {
+    format!(
+       "{tag_color}{tags_short}\t{comment_color}{comment_short}\t{snippet_color}{snippet_short}\t{tags}\t{comment}\t{snippet}\t\n",
+       tags_short = limit_str(tags, tag_width),
+       comment_short = limit_str(comment, comment_width),
+       snippet_short = full_snippet,
+       comment_color = color::Fg(COMMENT_COLOR),
+       tag_color = color::Fg(TAG_COLOR),
+       snippet_color = color::Fg(SNIPPET_COLOR),
+       tags = tags,
+       comment = comment,
+       snippet = &full_snippet)
+}
diff --git a/src/docstring.txt b/src/docstring.txt
deleted file mode 100644
index 9ffef7c..0000000
--- a/src/docstring.txt
+++ /dev/null
@@ -1,63 +0,0 @@
-An interactive cheatsheet tool for the command-line
-
-Usage:
-   navi [command] [<args>...] [options]
-
-Commands:
-   query  <cmd>             Pre-filter results
-   search <cmd>             Search for cheatsheets on online repositories
-   best   <cmd> <args>...   Considers the best match
-   widget <shell>           Prints the path for the widget file to be sourced
-
-Options:
-   --print                  Prevent script execution
-   --path                   List of :-separated paths to look for cheats
-   --no-interpolation       Prevent argument interpolation
-   --no-preview             Hide command preview window
-   --no-autoselect          Prevents autoselecting single entries in a list
-   --fzf-overrides          Overrides for fzf commands [default: --with-nth 3,1,2 --exact]
-   --col-widths             Set column widths [default: 15,50,0]
-   --col-colors             Set color ANSI codes [default: 90,34,37]
-
-Keybindings:
-   Ctrl-y                   Copy snippet to clipboard
-   Ctrl-j                   Move down one entry
-   Ctrl-k                   Move up one entry
-
-Environment variables:
-   NAVI_PATH                List of :-separated paths to look for cheats
-   FZF_DEFAULT_OPTS         Default fzf options (e.g. '--layout=reverse')
-
-Examples:
-   navi                                  # default behavior
-   navi --print                          # doesn't execute the snippet
-   navi --path '/some/dir:/other/dir'    # uses custom cheats
-   navi search docker                    # uses online data
-   navi query git                        # filters results by "git"
-   navi best 'sql create db' root mydb   # uses a snippet as a CLI
-   source "$(navi widget zsh)"           # loads the zsh widget
-   navi --col-widths 10,50,0             # limits the first two columns's width
-   navi --col-colors 32,32,32            # make all columns green
-   navi --fzf-overrides '--with-nth 1,2' # shows only the comment and tag columns
-   navi --fzf-overrides '--nth 1,2'      # search will consider only the first two columns
-   navi --fzf-overrides '--no-exact'     # looser search algorithm
-
-More info:
-
-   search
-      http://cheat.sh is used for cheatsheet retrieval
-      please note that these cheatsheets may not work out of the box
-      always check the preview window before executing commands!
-
-   --col-widths
-      the number is the percentage relative to the terminal width
-      0 means that a column will be as wide as necessary
-
-   fzf properties
-      please refer to https://github.com/junegunn/fzf for further details
-
-   fzf's --with-nth
-      1 refers to the comment column; 2, snippet; 3, tag
-
-   full docs
-      please refer to the README at https://github.com/denisidoro/navi
diff --git a/src/filesystem.rs b/src/filesystem.rs
new file mode 100644
index 0000000..58e9da6
--- /dev/null
+++ b/src/filesystem.rs
@@ -0,0 +1,33 @@
+use std::fs::File;
+use std::io::{self, BufRead, BufReader, Lines};
+use std::path::Path;
+
+pub fn read_lines<P>(filename: P) -> io::Result<Lines<BufReader<File>>>
+where
+    P: AsRef<Path>,
+{
+    let file = File::open(filename)?;
+    Ok(io::BufReader::new(file).lines())
+}
+
+pub fn exe_string() -> String {
+    String::from(
+        std::env::current_exe()
+            .unwrap()
+            .as_os_str()
+            .to_str()
+            .unwrap(),
+    )
+}
+
+pub fn exe_path_string() -> String {
+    String::from(
+        std::env::current_exe()
+            .unwrap()
+            .parent()
+            .unwrap()
+            .as_os_str()
+            .to_str()
+            .unwrap(),
+    )
+}
diff --git a/src/fzf.rs b/src/fzf.rs
new file mode 100644
index 0000000..5a49110
--- /dev/null
+++ b/src/fzf.rs
@@ -0,0 +1,135 @@
+use crate::cheat;
+use crate::filesystem;
+
+use std::collections::HashMap;
+use std::process;
+use std::process::{Command, Stdio};
+
+pub struct Opts<'a> {
+    pub query: Option<String>,
+    pub filter: Option<String>,
+    pub prompt: Option<String>,
+    pub preview: bool,
+    pub autoselect: bool,
+    pub overrides: Option<&'a String>, // TODO: remove &'a
+    pub header_lines: u8,
+    pub multi: bool,
+    pub copyable: bool,
+    pub suggestions: bool,
+    pub nth: Option<u8>,
+}
+
+impl Default for Opts<'_> {
+    fn default() -> Self {
+        Self {
+            query: None,
+            filter: None,
+            preview: true,
+            autoselect: true,
+            overrides: None,
+            header_lines: 0,
+            prompt: None,
+            multi: false,
+            copyable: false,
+            suggestions: true,
+            nth: None,
+        }
+    }
+}
+
+pub fn call<F>(opts: Opts, stdin_fn: F) -> (process::Output, Option<HashMap<String, cheat::Value>>)
+where
+    F: Fn(&mut process::ChildStdin) -> Option<HashMap<String, cheat::Value>>,
+{
+    let mut c = Command::new("fzf");
+
+    c.args(&[
+        "--preview-window",
+        "up:2",
+        "--with-nth",
+        "1,2,3",
+        "--delimiter",
+        "\t",
+        "--ansi",
+        "--bind",
+        "ctrl-j:down,ctrl-k:up",
+        "--exact",
+    ]);
+
+    if opts.autoselect {
+        c.arg("--select-1");
+    }
+
+    if opts.multi {
+        c.arg("--multi");
+    }
+
+    if opts.copyable {
+        c.args(&["--expect", "ctrl-y,enter"]);
+    }
+
+    if opts.preview {
+        c.args(&[
+            "--preview",
+            format!("{} preview {{}}", filesystem::exe_string()).as_str(),
+        ]);
+    }
+
+    if let Some(q) = opts.query {
+        c.args(&["--query", &q]);
+    }
+
+    if let Some(f) = opts.filter {
+        c.args(&["--filter", &f]);
+    }
+
+    if let Some(p) = opts.prompt {
+        c.args(&["--prompt", &p]);
+    }
+
+    if let Some(n) = opts.nth {
+        c.args(&["--nth", &n.to_string()]);
+    }
+
+    if opts.header_lines > 0 {
+        c.args(&["--header-lines", format!("{}", opts.header_lines).as_str()]);
+    }
+
+    if let Some(o) = opts.overrides {
+        o.as_str()
+            .split(' ')
+            .map(|s| s.to_string())
+            .filter(|s| !s.is_empty())
+            .for_each(|s| {
+                c.arg(s);
+            });
+    }
+
+    if !opts.suggestions {
+        c.args(&["--print-query", "--no-select-1", "--height", "1"]);
+    }
+
+    let child = c
+        .stdin(Stdio::piped())
+        .stdout(Stdio::piped())
+        .stderr(Stdio::inherit())
+        .spawn();
+
+    let mut child = match child {
+        Ok(x) => x,
+        Err(_) => {
+            eprintln!( "navi was unable to call fzf.\nPlease make sure it's correctly installed\nRefer to https://github.com/junegunn/fzf for more info.");
+            process::exit(33)
+        }
+    };
+
+    let stdin = child
+        .stdin
+        .as_mut()
+        .ok_or("Child process stdin has not been captured!")
+        .unwrap();
+
+    let result = stdin_fn(stdin);
+
+    (child.wait_with_output().unwrap(), result)
+}
diff --git a/src/health.sh b/src/health.sh
deleted file mode 100644
index 3e7eb6e..0000000
--- a/src/health.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-
-health::fzf() {
-   if ! command_exists fzf && ! [ $NAVI_ENV -eq "test" ]; then
-      echoerr "You need to install fzf before using navi"
-      echoerr "Please refer to https://github.com/junegunn/fzf for install instructions"
-      exit 66
-   fi
-}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..036c0e9
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,36 @@
+// #[macro_use]
+// extern crate lazy_static;
+
+use std::error::Error;
+
+mod cheat;
+mod cmds;
+mod display;
+mod filesystem;
+mod fzf;
+mod option;
+
+use crate::cmds::core::Variant;
+use option::{Command, InternalCommand};
+
+fn main() -> Result<(), Box<dyn Error>> {
+    match option::internal_command() {
+        Some(InternalCommand::Preview { line }) => cmds::preview::main(line),
+        _ => {
+            let mut config = option::parse();
+            match config.cmd.as_mut() {
+                None => cmds::core::main(Variant::Core, config),
+                Some(c) => match c {
+                    Command::Query { query } => cmds::query::main(query.clone(), config),
+                    Command::Best { query, args } => {
+                        cmds::best::main(query.clone(), args.to_vec(), config)
+                    }
+                    Command::Search { query } => cmds::search::main(query.clone(), config),
+                    Command::Widget { shell } => cmds::shell::main(&shell[..]),
+                    Command::Func { func, args } => cmds::func::main(func.clone(), args.to_vec()),
+                    Command::Home => cmds::home::main(),
+                },
+            }
+        }
+    }
+}
diff --git a/src/main.sh b/src/main.sh
deleted file mode 100644
index 759c1d3..0000000
--- a/src/main.sh
+++ /dev/null
@@ -1,148 +0,0 @@
-#!/usr/bin/env bash
-
-if ${NAVI_FORCE_GNU:-false} && [ -n "${DOTFILES:-}" ]; then
-   source "${DOTFILES}/scripts/core/main.sh"
-fi
-
-source "${NAVI_HOME}/src/arg.sh"
-source "${NAVI_HOME}/src/cheat.sh"
-source "${NAVI_HOME}/src/cmd.sh"
-source "${NAVI_HOME}/src/clipboard.sh"
-source "${NAVI_HOME}/src/coll.sh"
-source "${NAVI_HOME}/src/dict.sh"
-source "${NAVI_HOME}/src/health.sh"
-source "${NAVI_HOME}/src/misc.sh"
-source "${NAVI_HOME}/src/opts.sh"
-source "${NAVI_HOME}/src/search.sh"
-source "${NAVI_HOME}/src/selection.sh"
-source "${NAVI_HOME}/src/str.sh"
-source "${NAVI_HOME}/src/style.sh"
-source "${NAVI_HOME}/src/ui.sh"
-
-handler::main() {
-   local -r cheats="$(cheat::memoized_read_all)"
-   cheat::export_cache "$cheats"
-   local -r selection="$(ui::select "$cheats")"
-   local -r cheat="$(cheat::from_selection "$cheats" "$selection")"
-   [ -z "$cheat" ] && die "No valid cheatsheet!"
-
-   local -r interpolation="$(dict::get "$OPTIONS" interpolation)"
-
-   local cmd="$(selection::snippet "$selection")"
-   local result arg value
-
-   local i=0
-   while $interpolation; do
-      result="$(cmd::loop "$cmd" "$cheat")"
-      arg="$(dict::get "$result" arg)"
-      value="$(dict::get "$result" value)"
-      cmd="$(dict::get "$result" cmd)"
-
-      [ -z "$arg" ] && break
-      [ -z "$value" ] && die "Unable to fetch suggestions for '$arg'!"
-
-      eval "local $arg"='$value'
-      cmd="$(echo "$cmd" | arg::interpolate "$arg" "$value")"
-
-      i=$((i+1))
-   done
-
-   cmd::finish "$cmd" "$selection"
-}
-
-handler::preview() {
-   local -r query="$1"
-   local -r cheats="$(cheat::memoized_read_all)"
-   local -r selection="$(echo "$query" | selection::dict "$cheats")"
-   local -r cheat="$(cheat::from_selection "$cheats" "$selection")"
-   [ -n "$cheat" ] && ui::print_preview "$selection"
-}
-
-handler::help() {
-   opts::extract_help "$0"
-}
-
-handler::version() {
-   local -r full="${1:-false}"
-
-   echo "${VERSION:-unknown}"
-
-   if $full; then
-      source "${NAVI_HOME}/src/version.sh"
-      version::code 2>/dev/null \
-         || die "unknown code"
-   fi
-}
-
-handler::script() {
-   "${NAVI_HOME}/scripts/"${SCRIPT_ARGS[@]}
-}
-
-handler::fn() {
-   ${SCRIPT_ARGS[@]}
-}
-
-handler::home() {
-   echo "${NAVI_HOME}"
-}
-
-handler::widget() {
-   local widget
-   local -r print="$(dict::get "$OPTIONS" print)"
-
-   case "$SH" in
-      zsh) widget="${NAVI_HOME}/navi.plugin.zsh" ;;
-      bash) widget="${NAVI_HOME}/navi.plugin.bash" ;;
-      fish) widget="${NAVI_HOME}/navi.plugin.fish" ;;
-      *) die "Invalid shell: $SH" ;;
-   esac
-
-   $print \
-      && cat "$widget" \
-      || echo "$widget"
-}
-
-handler::search() {
-   local -r query="$(dict::get "$OPTIONS" query)"
-   search::save "$query" || true
-   handler::main
-}
-
-main() {
-   case "$(dict::get "$OPTIONS" entry_point)" in
-      preview)
-         local -r query="$(dict::get "$OPTIONS" query)"
-         handler::preview "$query"  \
-            || echoerr "Unable to find command for '$query'"
-         ;;
-      search)
-         health::fzf
-         handler::search
-         ;;
-      version)
-         handler::version false
-         ;;
-      full-version)
-         handler::version true
-         ;;
-      home)
-         handler::home
-         ;;
-      script)
-         handler::script
-         ;;
-      fn)
-         handler::fn
-         ;;
-      help)
-         handler::help
-         ;;
-      widget)
-         handler::widget
-         ;;
-      *)
-         health::fzf
-         handler::main
-         ;;
-   esac
-}
diff --git a/src/misc.sh b/src/misc.sh
deleted file mode 100644
index df02a30..0000000
--- a/src/misc.sh
+++ /dev/null
@@ -1,49 +0,0 @@
-#!/usr/bin/env bash
-
-command_exists() {
-   local -r cmd="${1:-}"
-   [ -n $cmd ] && type "$cmd" &> /dev/null
-}
-
-platform::existing_command() {
-   local cmd
-   for cmd in "$@"; do
-      if command_exists "$cmd"; then
-         echo "$cmd"
-         return 0
-      fi
-   done
-   return 1
-}
-
-echoerr() {
-   echo "$@" 1>&2
-}
-
-url::open() {
-   local -r cmd="$(platform::existing_command "${BROWSER:-}" xdg-open open google-chrome firefox)"
-   "$cmd" "$@" & disown
-}
-
-tap() {
-   local -r input="$(cat)"
-   echoerr "$input"
-   echo "$input"
-}
-
-die() {
-   echoerr "$@"
-   exit 42
-}
-
-or() {
-   local -r x="$(cat)"
-   local -r y="${1:-}"
-
-   if [ -n "$x" ]; then
-      echo "$x"
-   elif [ $# -gt 0 ]; then
-      shift
-      echo "$y" | or "$@"
-   fi
-}
\ No newline at end of file
diff --git a/src/option.rs b/src/option.rs
new file mode 100644
index 0000000..8b95c81
--- /dev/null
+++ b/src/option.rs
@@ -0,0 +1,82 @@
+use std::env;
+use structopt::StructOpt;
+
+#[derive(Debug, StructOpt)]
+#[structopt(after_help = "EXAMPLES:
+    navi                                   # default behavior
+    navi --print                           # doesn't execute the snippet
+    navi --path '/some/dir:/other/dir'     # uses custom cheats
+    navi search docker                     # uses online data
+    navi query git                         # filters results by \"git\"
+    navi best 'sql create db' root mydb    # uses a snippet as a CLI
+    source \"$(navi widget zsh)\"            # loads the zsh widget
+    navi --fzf-overrides ' --with-nth 1,2' # shows only the comment and tag columns
+    navi --fzf-overrides ' --nth 1,2'      # search will consider only the first two columns
+    navi --fzf-overrides ' --no-exact'     # looser search algorithm")]
+pub struct Config {
+    /// List of :-separated paths containing .cheat files
+    #[structopt(short, long, env = "NAVI_PATH")]
+    pub path: Option<String>,
+
+    /// [alpha] Instead of executing a snippet, saves it to a file
+    #[structopt(short, long)]
+    pub save: Option<String>,
+
+    /// Instead of executing a snippet, prints it to stdout
+    #[structopt(long)]
+    pub print: bool,
+
+    /// Prevents autoselection in case of single entry
+    #[structopt(long)]
+    pub no_autoselect: bool,
+
+    /// Hides preview window
+    #[structopt(long)]
+    pub no_preview: bool,
+
+    // #[structopt(long)]
+    // pub col_widths: Option<String>,
+    /// Overrides for fzf commands (must start with an empty space)
+    #[structopt(long)]
+    #[structopt(long)]
+    pub fzf_overrides: Option<String>,
+
+    #[structopt(subcommand)]
+    pub cmd: Option<Command>,
+}
+
+#[derive(Debug, StructOpt)]
+pub enum Command {
+    /// Filters results
+    Query { query: String },
+    /// Shows navi's home directory
+    Home,
+    /// Uses online repositories for cheatsheets
+    Search { query: String },
+    /// Autoselects the snippet that best matches the query
+    Best { query: String, args: Vec<String> },
+    /// Performs ad-hoc functions provided by navi
+    Func { func: String, args: Vec<String> },
+    /// Shows the path for shell widget files
+    Widget { shell: String },
+}
+
+pub enum InternalCommand {
+    Preview { line: String },
+}
+
+pub fn parse() -> Config {
+    Config::from_args()
+}
+
+pub fn internal_command() -> Option<InternalCommand> {
+    let mut args = env::args();
+    args.next();
+    if args.next() == Some(String::from("preview")) {
+        Some(InternalCommand::Preview {
+            line: args.next().unwrap(),
+        })
+    } else {
+        None
+    }
+}
diff --git a/src/opts.sh b/src/opts.sh
deleted file mode 100644
index a1825c6..0000000
--- a/src/opts.sh
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-opts::extract_help() {
-   local -r file="${NAVI_HOME}/src/docstring.txt"
-   cat "$file"
-}
-
-opts::eval() {
-   local wait_for=""
-   local entry_point="main"
-   local print=false
-   local interpolation=true
-   local preview=true
-   local path="${NAVI_PATH:-${NAVI_DIR:-${NAVI_HOME}/cheats}}"
-   local autoselect=true
-   local best=false
-   local query=""
-   local values=""
-   local col_widths="15,50,0"
-   local col_colors="90,34,37"
-   local fzf_overrides="--with-nth 3,1,2 --exact"
-   local fzf_opts="${FZF_DEFAULT_OPTS:---height 70% --reverse --border --inline-info --cycle}"
-
-   case "${1:-}" in
-      --version|version) entry_point="version"; shift ;;
-      --full-version|full-version) entry_point="full-version"; shift ;;
-      --help|help) entry_point="help"; shift ;;
-      search) entry_point="search"; wait_for="search"; shift ;;
-      preview) entry_point="preview"; wait_for="preview"; shift ;;
-      query|q) wait_for="query"; shift ;;
-      best|b) best=true; wait_for="best"; shift ;;
-      home) entry_point="home"; shift ;;
-      script) entry_point="script"; shift; SCRIPT_ARGS="$@" ;;
-      fn) entry_point="fn"; shift; SCRIPT_ARGS="$@" ;;
-      widget) entry_point="widget"; shift; wait_for="widget" ;;
-   esac
-
-   for arg in "$@"; do
-      case $wait_for in
-         path) path="$arg"; wait_for=""; continue ;;
-         preview) query="$(arg::deserialize "$arg")"; wait_for=""; continue ;;
-         search) query="$arg"; wait_for=""; path="${path}:$(search::full_path "$query")"; continue ;;
-         query|best) query="$arg"; wait_for=""; continue ;;
-         widget) SH="$arg"; wait_for=""; continue ;;
-         col-widths) col_widths="$(echo "$arg" | xargs | tr ' ' ',')"; wait_for=""; continue ;;
-         col-colors) col_colors="$(echo "$arg")"; wait_for=""; continue ;;
-         fzf-overrides) fzf_overrides="$arg" ; wait_for=""; continue ;;
-      esac
-
-      case $arg in
-         --print) print=true ;;
-         --no-interpolation) interpolation=false ;;
-         --interpolation) interpolation=true ;;
-         --no-preview) preview=false ;;
-         --preview) preview=true ;;
-         --path|--dir) wait_for="path" ;;
-         --no-autoselect) autoselect=false ;;
-         --autoselect) autoselect=true ;;
-         --col-widths) wait_for="col-widths" ;;
-         --col-colors) wait_for="col-colors" ;;
-         --fzf-overrides) wait_for="fzf-overrides" ;;
-         *) values="$(echo "$values" | coll::add "$arg")" ;;
-      esac
-   done
-
-   OPTIONS="$(dict::new \
-      entry_point "$entry_point" \
-      print "$print" \
-      interpolation "$interpolation" \
-      preview "$preview" \
-      autoselect "$autoselect" \
-      query "$query" \
-      best "$best" \
-      values "$values" \
-      fzf-overrides "$fzf_overrides" \
-      col-colors "$col_colors" \
-      col-widths "$col_widths")"
-
-   export NAVI_PATH="$path"
-   export FZF_DEFAULT_OPTS="$fzf_opts"
-}
diff --git a/src/search.sh b/src/search.sh
deleted file mode 100644
index f611e0b..0000000
--- a/src/search.sh
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/bin/env bash
-
-search::cheat() {
-   local -r cmd="$(echo "$1" | str::first_word)"
-
-   echo "% ${cmd}, cheatsh"
-   echo
-   curl -s "${CHTSH_URL:-http://cht.sh}/${cmd}?T"
-}
-
-search::filename() {
-   local -r cmd="$(echo "$1" | str::first_word)"
-
-   echo "${cmd}_cheatsh" \
-      | head -n1 \
-      | awk '{print $NF}' \
-      | xargs \
-      | tr ' ' '_'
-}
-
-search::full_path() {
-   local -r cmd="$(echo "$1" | str::first_word)"
-
-   echo "/tmp/navi/$(search::filename "$cmd").cheat"
-}
-
-search::save() {
-   local -r cmd="$(echo "$1" | str::first_word)"
-
-   local -r filepath="$(search::full_path "$cmd")"
-   local -r filedir="$(dirname "$filepath")"
-
-   if [ -f "$filepath" ]; then
-      return
-   fi
-
-   mkdir -p "$filedir" &> /dev/null || true
-   search::cheat "$cmd" > "$filepath"
-}
\ No newline at end of file
diff --git a/src/selection.sh b/src/selection.sh
deleted file mode 100644
index 06cde84..0000000
--- a/src/selection.sh
+++ /dev/null
@@ -1,75 +0,0 @@
-#!/usr/bin/env bash
-
-SELECTION_ESCAPE_STR="   "
-
-selection_str::cleanup() {
-   sed -E "s/  +/${SELECTION_ESCAPE_STR}/g"
-}
-
-selection_str::without_ellipsis() {
-   tr -d "…"
-}
-
-selection_str::comment() {
-   echo "$*" | awk -F "${SELECTION_ESCAPE_STR}" '{print $1}' | selection_str::without_ellipsis
-}
-
-selection_str::snippet() {
-   echo "$*" | awk -F "${SELECTION_ESCAPE_STR}" '{print $2}' | selection_str::without_ellipsis
-}
-
-selection_str::tags() {
-   echo "$*" | awk -F "${SELECTION_ESCAPE_STR}" '{print $3}' | selection_str::without_ellipsis
-}
-
-selection::resolve_ellipsis() {
-   local -r str="$(selection_str::cleanup)"
-   local -r cheats="$*"
-
-   if echo "$str" | grep -q "…"; then
-      local -r comment="$(selection_str::comment "$str")"
-      local -r snippet="$(selection_str::snippet "$str")"
-      local -r tags="$(selection_str::tags "$str")"
-      local -r cheat="$(cheat::from_tags "$cheats" "$tags")"
-
-      local -r tags2="$(echo "$cheat" | head -n1 | str::sub 2)"
-      local -r comment2="$(echo "$cheat" | grep "$comment" | str::last_line | str::sub 2)"
-      local -r snippet2="$(echo "$cheat" | grep "$comment2" -A 999| str::last_paragraph_line)"
-
-      echo "${comment2}${SELECTION_ESCAPE_STR}${snippet2}${SELECTION_ESCAPE_STR}${tags2}"
-   else
-      echo "$str"
-   fi
-}
-
-selection::dict() {
-   local -r cheats="$1"
-   local -r key="${2:-}"
-   local -r str="$(selection::resolve_ellipsis "$cheats")"
-
-   local -r comment="$(selection_str::comment "$str")"
-   local -r snippet="$(selection_str::snippet "$str")"
-   local -r tags="$(selection_str::tags "$str")"
-
-   dict::new comment "$comment" snippet "$snippet" tags "$tags" key "$key" | sed "s/'''/'/g"
-}
-
-selection::comment() {
-   local -r selection="$1"
-   dict::get "$selection" comment
-}
-
-selection::snippet() {
-   local -r selection="$1"
-   dict::get "$selection" snippet
-}
-
-selection::tags() {
-   local -r selection="$1"
-   dict::get "$selection" tags
-}
-
-selection::key() {
-   local -r selection="$1"
-   dict::get "$selection" key
-}
\ No newline at end of file
diff --git a/src/str.sh b/src/str.sh
deleted file mode 100644
index 55ed101..0000000
--- a/src/str.sh
+++ /dev/null
@@ -1,85 +0,0 @@
-#!/usr/bin/env bash
-
-ESCAPE_CHAR="\034"
-ESCAPE_CHAR_2="\035"
-ESCAPE_CHAR_3="\036"
-
-str::length() {
-   awk '{print length}'
-}
-
-str::sub() {
-   local -r start="${1:-0}"
-   local -r finish="${2:-99999}"
-
-   cut -c "$((start + 1))-$((finish - 1))"
-}
-
-str::column() {
-   local -r n="${1:-}"
-   local -r separator="$(echo "${2:-}" | or "  +")"
-
-   if [ -n "$n" ]; then
-      awk -F "${separator:- }" "{print \$$n}"
-   else
-      cat
-   fi
-}
-
-str::last_paragraph_line() {
-   awk '(!NF) { exit } { print $0 }' \
-      | tail -n1
-}
-
-str::first_word() {
-   awk '{print $1}'
-}
-
-str::index_last_occurrence() {
-   local -r char="$1"
-
-   awk 'BEGIN{FS=""}{ for(i=1;i<=NF;i++){ if($i=="'"$char"'"){ p=i } }}END{  print p }'
-}
-
-str::reverse_lines() {
-   if command_exists tac; then
-      tac
-   elif command_exists perl; then
-      perl -e 'print reverse <>'
-   else
-      awk '{a[i++]=$0} END {for (j=i-1; j>=0;) print a[j--] }'
-   fi
-}
-
-str::not_empty() {
-   local -r input="$(cat)"
-
-   if [ -n $input ]; then
-      echo "$input"
-   else
-      return 1
-   fi
-}
-
-str::remove_empty_lines() {
-   sed '/^$/d'
-}
-
-str::last_line() {
-   tail -n1
-}
-
-str::as_column() {
-   local -r txt="$(cat)"
-   local -r separator="$1"
-
-   if command_exists column; then
-      echo "$txt" | column -t -s "$separator"
-   else
-      echo "$txt" | awk -F "$separator" -vOFS='  ' 'NF > 0 { $1 = $1 } 1'
-   fi
-}
-
-str::with_line_numbers() {
-   awk '{printf("%d %s\n", NR,$0)}'
-}
\ No newline at end of file
diff --git a/src/style.sh b/src/style.sh
deleted file mode 100644
index 737be5c..0000000
--- a/src/style.sh
+++ /dev/null
@@ -1,52 +0,0 @@
-#!/usr/bin/env bash
-
-# TODO: move this elsewhere
-style::get_index() {
-   local -r txt="$1"
-   local -r ref="$2"
-
-   local -r i="$(echo "$txt" | grep "${ref}\$" | awk '{print $1}')"
-   echo $((i - 1))
-}
-
-# TODO: move this elsewhere
-style::with_nth() {
-   grep -Eo 'with\-nth +([^ ]+)' | awk '{print $NF}'
-}
-
-style::width() {
-   local -r col="$1"
-   local -r print="$(dict::get "$OPTIONS" print)"
-   local -r widths="$(dict::get "$OPTIONS" col-widths | tr ',' $'\n')"
-   local -r numbered_with_nth="$(dict::get "$OPTIONS" fzf-overrides | style::with_nth | tr ',' $'\n' | str::with_line_numbers)"
-
-   if [ -n "$numbered_with_nth" ]; then
-      local -r index="$(style::get_index "$numbered_with_nth" $col 2>/dev/null)"
-      echo "$widths" | coll::get $index 2>/dev/null || echo 0
-   else
-      echo 0
-   fi
-}
-
-style::color() {
-   local -r col="$1"
-   local -r print="$(dict::get "$OPTIONS" print)"
-   local -r colors="$(dict::get "$OPTIONS" col-colors | tr ',' $'\n')"
-   local -r numbered_with_nth="$(dict::get "$OPTIONS" fzf-overrides | style::with_nth | tr ',' $'\n' | str::with_line_numbers)"
-
-   if [ -n "$numbered_with_nth" ]; then
-      local -r index="$(style::get_index "$numbered_with_nth" $col 2>/dev/null)"
-      echo "$colors" | coll::get $index 2>/dev/null || echo 0
-   else
-      echo 30
-   fi
-}
-
-style::comment_width() { style::width 1 "$@"; }
-style::snippet_width() { style::width 2 "$@"; }
-style::tag_width() { style::width 3 "$@"; }
-
-style::comment_color() { style::color 1 "$@"; }
-style::snippet_color() { style::color 2 "$@"; }
-style::tag_color() { style::color 3 "$@"; }
-
diff --git a/src/ui.sh b/src/ui.sh
deleted file mode 100644
index 08c4a71..0000000
--- a/src/ui.sh
+++ /dev/null
@@ -1,98 +0,0 @@
-#!/usr/bin/env bash
-
-ui::fzf() {
-   local -r autoselect="$(dict::get "$OPTIONS" autoselect)"
-   local -r with_nth="$(dict::get "$OPTIONS" with-nth)"
-   local -r nth="$(dict::get "$OPTIONS" nth)"
-
-   local args
-   args+=("--height")
-   args+=("100%")
-   if ${autoselect:-false}; then
-      args+=("--select-1")
-   fi
-   args+=("--bind"); args+=("ctrl-j:down,ctrl-k:up")
-
-   local -r fzf_cmd="$([ $NAVI_ENV == "test" ] && echo "fzf_mock" || echo "fzf")"
-   "$fzf_cmd" ${args[@]:-} --inline-info "$@"
-}
-
-ui::select() {
-   local -r cheats="$1"
-
-   [[ "${SHELL:-}" =~ 'fish' ]] || local -r sub='$'
-
-   local -r script_path="${NAVI_HOME}/navi"
-   local -r preview_cmd="\"${script_path}\" preview ${sub:-}(echo \'{}\' | $(arg::serialize_code))"
-
-   local -r query="$(dict::get "$OPTIONS" query)"
-   local -r entry_point="$(dict::get "$OPTIONS" entry_point)"
-   local -r preview="$(dict::get "$OPTIONS" preview)"
-   local -r best="$(dict::get "$OPTIONS" best)"
-   local -r fzf_overrides="$(dict::get "$OPTIONS" fzf-overrides)"
-
-   local args=()
-   args+=("-i")
-   args+=("--ansi")
-   if $preview; then
-      args+=("--preview"); args+=("$preview_cmd")
-      args+=("--preview-window"); args+=("up:2")
-   fi
-   if [[ -n "$query" ]] && $best; then
-      args+=("--filter"); args+=("${query} ")
-   elif  [[ -n "$query" ]] && ! $best; then
-      args+=("--query"); args+=("${query} ")
-   fi
-   if [ "$entry_point" = "search" ]; then
-      args+=("--header"); args+=("Displaying online results. Please refer to 'navi --help' for details")
-   fi
-   args+=("--delimiter"); args+=('\s\s+')
-   args+=("--expect"); args+=("ctrl-y")
-
-   export FZF_DEFAULT_OPTS="${FZF_DEFAULT_OPTS} ${fzf_overrides}"
-
-   local -r result="$(echo "$cheats" \
-      | cheat::prettify \
-      | str::as_column $(printf "$ESCAPE_CHAR_3") \
-      | ui::fzf "${args[@]}")"
-
-   local -r key="$(echo "$result" | head -n1)"
-
-   echo "$result" \
-      | ($best && head -n1 || tail -n +2) \
-      | selection::dict "$cheats" "$key"
-}
-
-ui::clear_previous_line() {
-   tput cuu1 2>/dev/null && tput el || true
-}
-
-ui::width() {
-   shopt -s checkwinsize; (:;:) 2> /dev/null || true
-   if command_exists tput; then
-      tput cols
-   else
-      echo 130
-   fi
-}
-
-ui::remove_dep_order() {
-   sed -E 's/^: [^;]+; //'
-}
-
-ui::print_preview() {
-   local -r selection="$1"
-
-   local -r comment="$(selection::comment "$selection" | cmd::unescape)"
-   local -r snippet="$(selection::snippet "$selection" | cmd::unescape)"
-   local -r tags="$(selection::tags "$selection" | cmd::unescape)"
-
-   local -r comment_color="$(style::comment_color)"
-   local -r snippet_color="$(style::snippet_color)"
-   local -r tag_color="$(style::tag_color)"
-
-   printf "\033[${comment_color}m# "; echo -n "$comment"
-   printf " \033[${tag_color}m["; echo -n "$tags"; echo "]"
-   printf "\033[${snippet_color}m"
-   echo "$snippet" | ui::remove_dep_order
-}
diff --git a/src/version.sh b/src/version.sh
deleted file mode 100644
index a830cd8..0000000
--- a/src/version.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-version::code() {
-   cd "$NAVI_HOME"
-   local -r git_info=$(git log -n 1 --pretty=format:'%h%n%ad%n%s' --date=format:'%Y-%m-%d %Hh%M')
-   if [ -z "$git_info" ]; then
-      return 1
-   else
-      echo -e "$git_info"
-   fi
-}
\ No newline at end of file
diff --git a/test/arg_test.sh b/test/arg_test.sh
deleted file mode 100644
index 21bf857..0000000
--- a/test/arg_test.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-
-interpolation_one_word() {
-   echo "curl http://mysite.com/<user>/profile" \
-      | arg::interpolate "user" "john" \
-      | test::equals "curl http://mysite.com/john/profile"
-}
-
-interpolation_multiple_words() {
-   echo "cp <file> <new_file>" \
-      | arg::interpolate "file" "C:/Program Files/app/foo.exe" \
-      | arg::interpolate "new_file" "/mnt/c/Users/john/foo.exe" \
-      | test::equals 'cp "C:/Program Files/app/foo.exe" /mnt/c/Users/john/foo.exe'
-}
-
-test::set_suite "arg"
-test::run "if there's only one word, interpolation doesn't include quotes" interpolation_one_word
-test::run "if there are multiple words, interpolation includes quotes" interpolation_multiple_words
diff --git a/test/cheat_test.sh b/test/cheat_test.sh
deleted file mode 100644
index 17e2abe..0000000
--- a/test/cheat_test.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-
-assert_docker_cheat() {
-   cheat::find | test::contains "docker.cheat"
-}
-
-test::set_suite "cheat"
-test::run "We can find at least one known cheatsheet" assert_docker_cheat
diff --git a/test/coll_test.sh b/test/coll_test.sh
deleted file mode 100644
index aeb749b..0000000
--- a/test/coll_test.sh
+++ /dev/null
@@ -1,109 +0,0 @@
-#!/usr/bin/env bash
-
-test::coll_equals() {
-   local -r actual="$(cat)"
-   local -r expected="$(coll::new "$@")"
-
-   echo "$actual" | test::equals "$expected"
-}
-
-inc() {
-   local -r x="$1"
-   echo $((x+1))
-}
-
-sum() {
-   local -r x="$1"
-   local -r y="$2"
-   echo $((x*y))
-}
-
-powers() {
-   local x="$1"
-   coll::new $((x*10)) $((x*100))
-}
-
-odd() {
-   local x="$1"
-   [ $((x%2)) -eq 1 ]
-}
-
-coll_map() {
-   coll::new 1 2 3 \
-      | coll::map inc \
-      | test::coll_equals 2 3 4
-}
-
-coll_flatmap() {
-   coll::new 1 2 3 \
-      | coll::map powers \
-      | test::coll_equals 10 100 20 200 30 300
-}
-
-coll_reduce() {
-   coll::new 1 2 3 \
-      | coll::reduce sum 10 \
-      | test::equals 60
-}
-
-coll_filter() {
-   coll::new 1 2 3 4 5 \
-      | coll::filter odd \
-      | test::coll_equals 1 3 5
-}
-
-coll_remove() {
-   coll::new 1 2 3 4 5 \
-      | coll::remove odd \
-      | test::coll_equals 2 4
-}
-
-coll_first() {
-   coll::new 1 2 3 \
-      | coll::first \
-      | test::coll_equals 1
-}
-
-coll_rest() {
-   coll::new 1 2 3 \
-      | coll::rest \
-      | test::coll_equals 2 3
-}
-
-coll_add() {
-   coll::new 1 2 3 \
-      | coll::add 4 5 \
-      | coll::add 6 7 \
-      | test::coll_equals 1 2 3 4 5 6 7
-}
-
-coll_concat() {
-   coll::new 1 2 3 \
-      | coll::add "$(coll::new 4 5)" \
-      | test::coll_equals 1 2 3 4 5
-}
-
-coll_reverse() {
-   coll::new 1 2 3 \
-      | coll::reverse \
-      | test::coll_equals 3 2 1
-}
-
-coll_set() {
-   coll::new 1 2 3 2 4 2 \
-      | coll::set \
-      | test::coll_equals 1 2 3 4
-}
-
-test::set_suite "coll"
-test::run "map" coll_map
-test::run "filter" coll_filter
-test::run "remove" coll_remove
-test::run "first" coll_first
-test::run "rest" coll_rest
-test::run "add" coll_add
-test::run "add can be used as concat" coll_concat
-test::run "reduce" coll_reduce
-test::run "we can use map as flatmap" coll_flatmap
-test::run "reverse" coll_reverse
-test::run "set" coll_set
diff --git a/test/core.sh b/test/core.sh
deleted file mode 100644
index cb3b2e7..0000000
--- a/test/core.sh
+++ /dev/null
@@ -1,78 +0,0 @@
-#!/usr/bin/env bash
-
-export NAVI_FORCE_GNU=true
-
-source "${NAVI_HOME}/src/main.sh"
-source "${NAVI_HOME}/test/log.sh"
-
-opts::eval "$@"
-TEST_DIR="${NAVI_HOME}/test"
-
-PASSED=0
-FAILED=0
-SKIPPED=0
-SUITE=""
-
-test::set_suite() {
-   SUITE="$*"
-}
-
-test::success() {
-   PASSED=$((PASSED+1))
-   log::success "Test passed!"
-}
-
-test::fail() {
-   FAILED=$((FAILED+1))
-   log::error "Test failed..."
-   return
-}
-
-test::skip() {
-   echo
-   log::note "${SUITE:-unknown} - ${1:-unknown}"
-   SKIPPED=$((SKIPPED+1))
-   log::warning "Test skipped..."
-   return
-}
-
-test::run() {
-   echo
-   log::note "${SUITE:-unknown} - ${1:-unknown}"
-   shift
-   eval "$*" && test::success || test::fail
-}
-
-test::equals() {
-   local -r actual="$(cat)"
-   local -r expected="$(echo "${1:-}")"
-
-   if [[ "$actual" != "$expected" ]]; then
-      log::error "Expected '${expected}' but got '${actual}'"
-      return 2
-   fi
-}
-
-test::contains() {
-   local -r actual="$(cat)"
-   local -r regex="$(echo "${1:-}")"
-
-   if ! echo "$actual" | grep -qE "$regex"; then
-      log::error "Expected to contain '${regex}' but got '${actual}'"
-      return 2
-   fi
-}
-
-test::finish() {
-   echo
-   if [ $SKIPPED -gt 0 ]; then
-      log::warning "${SKIPPED} tests skipped!"
-   fi
-   if [ $FAILED -gt 0 ]; then
-      log::error "${PASSED} tests passed but ${FAILED} failed... :("
-      exit "${FAILED}"
-   else
-      log::success "All ${PASSED} tests passed! :)"
-      exit 0
-   fi
-}
diff --git a/test/dict_test.sh b/test/dict_test.sh
deleted file mode 100644
index f310bec..0000000
--- a/test/dict_test.sh
+++ /dev/null
@@ -1,133 +0,0 @@
-#!/usr/bin/env bash
-
-inc() {
-   local -r x="$1"
-   echo $((x+1))
-}
-
-test::map_equals() {
-   local -r actual="$(cat | dict::unescape_value | sort)"
-   local -r expected="$(dict::new "$@" | dict::unescape_value | sort)"
-
-   echo "$actual" | test::equals "$expected"
-}
-
-dict_assoc() {
-   dict::new \
-      | dict::assoc "foo" "42" \
-      | tr -d "$ESCAPE_CHAR" \
-      | tr -d "$ESCAPE_CHAR_2" \
-      | tr -d "$ESCAPE_CHAR_3" \
-      | test::equals "foo: 42"
-}
-
-dict_assoc_perc() {
-   dict::new \
-      | dict::assoc "foo" "42 %" bar "% 7" \
-      | dict::get bar \
-      | test::equals "% 7"
-}
-
-dict_assoc_multiple() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar" "5" \
-      | test::map_equals "bar" 5 "foo" 42
-}
-
-dict_dissoc() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar" "5" \
-      | dict::dissoc "bar" \
-      | test::map_equals "foo" 42
-}
-
-dict_assoc_again() {
-   dict::new \
-      | dict::assoc "foo" "42" \
-      | dict::assoc "foo" "42" \
-      | test::map_equals "foo" 42
-}
-
-dict_dissoc_nested() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar.a" 5 "bar.b" 6 "baz" 63 \
-      | dict::dissoc "bar" \
-      | test::map_equals "baz" 63 "foo" 42
-}
-
-dict_assoc_nested() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar.a" 5 "bar.c" 7 "baz" 63 \
-      | dict::assoc "bar.b" 6 \
-      | dict::get "bar.b" \
-      | test::equals "asdfsadf"
-}
-
-dict_get() {
-   dict::new \
-      | dict::assoc "foo" "42" \
-      | dict::get "foo" \
-      | test::equals "42"
-}
-
-dict_get_nested() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar.a" 5 "bar.b" 6 "baz" 63 \
-      | dict::get "bar.a" \
-      | test::equals "5"
-}
-
-dict_get_dict() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar.a" 5 "bar.b" 6 "baz" 63 \
-      | dict::get "bar" \
-      | test::map_equals "bar.a" 5 "bar.b" 6
-}
-
-dict_get_keys() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar.a" 5 "bar.b" 6 "baz" 63 \
-      | dict::keys \
-      | test::equals "$(echo -e "foo\nbar.a\nbar.b\nbaz")"
-}
-
-dict_get_values() {
-   dict::new \
-      | dict::assoc "foo" "42" "bar.a" 5 "bar.b" 6 "baz" 63 \
-      | dict::values \
-      | test::equals "$(echo -e "5\n6\n42\n63")"
-}
-
-dict_zipmap() {
-   dict::zipmap "key1\nkey2\nkey3" "value1\nvalue2\nvalue3" \
-      | test::map_equals "key1" "value1" "key2" "value2" "key3" "value3"
-}
-
-dict_update() {
-   dict::new "foo" 42 "bar" 5 \
-      | dict::update "bar" inc \
-      | test::map_equals "foo" 42 "bar" 6
-}
-
-dict_merge() {
-   dict::new "foo" 42 "bar" 5 \
-      | dict::merge "$(dict::new "bar" 7 "lorem" "ipsum")" \
-      | test::map_equals "foo" 42
-}
-
-test::set_suite "dict"
-test::run "We can assoc a value" dict_assoc
-test::skip "We can merge dicts" dict_merge
-test::run "We can assoc values with %" dict_assoc_perc
-test::run "We can assoc multiple values" dict_assoc_multiple
-test::skip "We can assoc a nested value" dict_assoc_nested
-test::run "We can dissoc a value" dict_dissoc
-test::run "Associng the same value is a no-op" dict_assoc_again
-test::run "Dissocing a key will replace all its subvalues" dict_dissoc_nested
-test::run "We can get a value" dict_get
-test::run "We can get a nested value" dict_get_nested
-test::run "We can get a dictionary" dict_get_dict
-test::run "We can get all keys" dict_get_keys
-test::skip "We can get all values" dict_get_values
-test::skip "We can get create a dict from a zipmap" dict_zipmap
-test::skip "We can update a value" dict_update
diff --git a/test/integration_test.sh b/test/integration_test.sh
deleted file mode 100644
index 36cf735..0000000
--- a/test/integration_test.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/usr/bin/env bash
-
-NAVI_BIN="${NAVI_HOME}/navi"
-TEST_DIR="${NAVI_HOME}/test"
-
-_navi() {
-   "$NAVI_BIN" "$@"
-}
-
-fzf_mock() {
-   head -n1 | sed 's/\x1b\[[0-9;]*m//g'
-}
-
-assert_version() {
-   local -r version="$(cat "$NAVI_BIN" | grep VERSION | cut -d'=' -f2 | tr -d '"')"
-
-   _navi --version \
-      | test::equals "$version"
-}
-
-assert_help() {
-   _navi --help \
-      | grep -q 'Options:'
-}
-
-assert_home() {
-   _navi home \
-      | grep -q '/'
-}
-
-assert_best() {
-   _navi best constant --path "$TEST_DIR" \
-      | test::equals 42
-}
-
-assert_query() {
-   NAVI_ENV="test" _navi --path "$TEST_DIR" \
-      | test::equals "2 12"
-}
-
-export HAS_FZF="$(command_exists fzf && echo true || echo false)"
-
-test::fzf() {
-   if $HAS_FZF; then
-      test::run "$@"
-   else
-      test::skip "$@"
-   fi
-}
-
-test::set_suite "integration"
-export -f fzf_mock
-test::run "version" assert_version
-test::run "help" assert_help
-test::run "home" assert_home
-test::fzf "best" assert_best # FZF setup needed in CircleCI
-test::fzf "query" assert_query # FZF setup needed in CircleCI
diff --git a/test/log.sh b/test/log.sh
deleted file mode 100644
index 507c610..0000000
--- a/test/log.sh
+++ /dev/null
@@ -1,102 +0,0 @@
-#!/usr/bin/env bash
-
-_export_colors() {
-   if ! ${DOT_COLORS_EXPORTED:-false}; then
-      if [ -z ${TERM:-} ] || [ $TERM = "dumb" ]; then
-         bold=""
-         underline=""
-         freset=""
-         purple=""
-         red=""
-         green=""
-         tan=""
-         blue=""
-      else
-         bold=$(tput bold)
-         underline=$(tput sgr 0 1)
-         freset=$(tput sgr0)
-         purple=$(tput setaf 171)
-         red=$(tput setaf 1)
-         green=$(tput setaf 76)
-         tan=$(tput setaf 3)
-         blue=$(tput setaf 38)
-      fi
-
-      log_black=30
-      log_red=31
-      log_green=32
-      log_yellow=33
-      log_blue=34
-      log_purple=35
-      log_cyan=36
-      log_white=37
-
-      log_regular=0
-      log_bold=1
-      log_underline=4
-
-      readonly DOT_COLORS_EXPORTED=true
-   fi
-}
-
-log::color() {
-   _export_colors
-   local bg=false
-   case "$@" in
-      *reset*) echo "\e[0m"; exit 0 ;;
-      *black*) color=$log_black ;;
-      *red*) color=$log_red ;;
-      *green*) color=$log_green ;;
-      *yellow*) color=$log_yellow ;;
-      *blue*) color=$log_blue ;;
-      *purple*) color=$log_purple ;;
-      *cyan*) color=$log_cyan ;;
-      *white*) color=$log_white ;;
-   esac
-   case "$@" in
-      *regular*) mod=$log_regular ;;
-      *bold*) mod=$log_bold ;;
-      *underline*) mod=$log_underline ;;
-   esac
-   case "$@" in
-      *background*) bg=true ;;
-      *bg*) bg=true ;;
-   esac
-
-   if $bg; then
-      echo "\e[${color}m"
-   else
-      echo "\e[${mod:-$log_regular};${color}m"
-   fi
-}
-
-if [ -z ${LOG_FILE+x} ]; then
-   readonly LOG_FILE="/tmp/$(basename "$0").log"
-fi
-
-_log() {
-   local template=$1
-   shift
-   if ${log_to_file:-false}; then
-      echo -e $(printf "$template" "$@") | tee -a "$LOG_FILE" >&2
-   else
-      echo -e $(printf "$template" "$@")
-   fi
-}
-
-_header() {
-   local TOTAL_CHARS=60
-   local total=$TOTAL_CHARS-2
-   local size=${#1}
-   local left=$((($total - $size) / 2))
-   local right=$(($total - $size - $left))
-   printf "%${left}s" '' | tr ' ' =
-   printf " $1 "
-   printf "%${right}s" '' | tr ' ' =
-}
-
-log::header() { _export_colors && _log "\n${bold}${purple}$(_header "$1")${freset}\n"; }
-log::success() { _export_colors && _log "${green}✔ %s${freset}\n" "$@"; }
-log::error() { _export_colors && _log "${red}✖ %s${freset}\n" "$@"; }
-log::warning() { _export_colors && _log "${tan}➜ %s${freset}\n" "$@"; }
-log::note() { _export_colors && _log "${blue}➜ %s${freset}\n" "$@"; }
diff --git a/test/platform_test.sh b/test/platform_test.sh
deleted file mode 100644
index 3b06650..0000000
--- a/test/platform_test.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-
-existing() {
-   platform::existing_command oasida fngo ni awk aoisdn oafm \
-      | test::equals awk
-}
-
-test::set_suite "platform"
-test::run "existing_command" existing
diff --git a/test/playground.cheat b/test/playground.cheat
deleted file mode 100644
index abd859f..0000000
--- a/test/playground.cheat
+++ /dev/null
@@ -1,16 +0,0 @@
-% test, playground
-
-# this should be the first test. single and double quotes + newlines
-echo <x> <y>
-
-# variable names
-echo <x> <foo> <foo_bar> <lorem-ipsum> <dolor sit>
-
-# use %
-coll::new 1 2 3 | xargs -I% echo "hello %"
-
-# return a constant number
-echo 42
-
-$ x: echo -e '2\n3\n4'
-$ y: echo -e "$((x+10))\n$((x+20))"
\ No newline at end of file
diff --git a/test/run b/test/run
deleted file mode 100755
index 93f532b..0000000
--- a/test/run
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
-source "${NAVI_HOME}/test/core.sh"
-
-tests="$(find "$NAVI_HOME/test" -iname "${1:-}*_test.sh")"
-
-NAVI_PATH="${NAVI_HOME}/cheats"
-
-for test in $tests; do
-   source "$test"
-done
-
-test::finish
diff --git a/test/var_test.sh b/test/var_test.sh
deleted file mode 100644
index e9bfbd5..0000000
--- a/test/var_test.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/usr/bin/env bash
-
-check_all_vars() {
-   local arg
-   IFS=$'\n'
-   for var in $(cat "$1" | grep -Eo "<[^>]*>"); do
-      if ! echo "$var" | grep -qE "$ARG_REGEX"; then
-         echoerr "$var isn't a valid variable name!"
-         return 1
-      fi
-   done
-}
-
-path="$NAVI_PATH"
-NAVI_PATH="${NAVI_PATH}:${TEST_DIR}"
-for cheat in $(cheat::find); do
-   test::run "All variables in $(basename $cheat) are valid" \
-      'check_all_vars "$cheat"'
-done
-NAVI_PATH="$path"
\ No newline at end of file
diff --git a/tests/tests.rs b/tests/tests.rs
new file mode 100644
index 0000000..31e1bb2
--- /dev/null
+++ b/tests/tests.rs
@@ -0,0 +1,7 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}