Allow multi-word shell.command config (#644)

Fixes #645

docs/config_file_example.yaml

@@ -29,3 +29,4 @@ finder:
 
 shell:
   command: bash # shell used for shell out. possible values: bash, zsh, dash, ...
+  # finder_command: bash # similar, but for fzf's internals

src/config/env.rs

@@ -8,7 +8,6 @@ pub struct EnvConfig {
     pub config_yaml: Option<String>,
     pub config_path: Option<String>,
     pub path: Option<String>,
-    pub shell: Option<String>,
     pub finder: Option<FinderChoice>,
     pub fzf_overrides: Option<String>,
     pub fzf_overrides_var: Option<String>,
@@ -20,7 +19,6 @@ impl EnvConfig {
             config_yaml: env_var::get(env_var::CONFIG_YAML).ok(),
             config_path: env_var::get(env_var::CONFIG).ok(),
             path: env_var::get(env_var::PATH).ok(),
-            shell: env_var::get(env_var::SHELL).ok(),
             finder: env_var::get(env_var::FINDER)
                 .ok()
                 .and_then(|x| FinderChoice::from_str(&x).ok()),

src/config/mod.rs

@@ -93,6 +93,14 @@ impl Config {
         self.yaml.shell.command.clone()
     }
 
+    pub fn finder_shell(&self) -> String {
+        self.yaml
+            .shell
+            .finder_command
+            .clone()
+            .unwrap_or_else(|| self.yaml.shell.command.clone())
+    }
+
     pub fn tag_rules(&self) -> Option<String> {
         self.clap
             .tag_rules

src/config/yaml.rs

@@ -80,6 +80,7 @@ pub struct Search {
 #[serde(default)]
 pub struct Shell {
     pub command: String,
+    pub finder_command: Option<String>,
 }
 
 #[derive(Deserialize, Default)]
@@ -177,6 +178,7 @@ impl Default for Shell {
     fn default() -> Self {
         Self {
             command: "bash".to_string(),
+            finder_command: None,
         }
     }
 }

src/env_var.rs

@@ -16,8 +16,6 @@ pub const FZF_OVERRIDES: &str = "NAVI_FZF_OVERRIDES";
 pub const FZF_OVERRIDES_VAR: &str = "NAVI_FZF_OVERRIDES_VAR";
 pub const FINDER: &str = "NAVI_FINDER";
 
-pub const SHELL: &str = "NAVI_SHELL";
-
 pub const CONFIG: &str = "NAVI_CONFIG";
 pub const CONFIG_YAML: &str = "NAVI_CONFIG_YAML";
 

src/finder/mod.rs

@@ -160,7 +160,7 @@ impl Finder for FinderChoice {
         }
 
         let child = command
-            .env("SHELL", CONFIG.shell())
+            .env("SHELL", CONFIG.finder_shell())
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .spawn();

src/shell.rs

@@ -36,10 +36,14 @@ impl ShellSpawnError {
 }
 
 pub fn out() -> Command {
-    let shell = CONFIG.shell();
+    let words_str = CONFIG.shell();
-    let mut cmd = Command::new(&shell);
+    let mut words_vec = shellwords::split(&words_str).expect("empty shell command");
-    let arg = if shell == "cmd.exe" { "/c" } else { "-c" };
+    let mut words = words_vec.iter_mut();
-    cmd.arg(arg);
+    let first_cmd = words.next().expect("absent shell binary");
+    let mut cmd = Command::new(&first_cmd);
+    cmd.args(words);
+    let dash_c = if words_str.contains("cmd.exe") { "/c" } else { "-c" };
+    cmd.arg(dash_c);
     cmd
 }
 

tests/config.yaml

@@ -0,0 +1,18 @@
+style:
+  tag:
+    color: cyan
+    width_percentage: 26
+    min_width: 20
+  comment:
+    color: yellow
+    width_percentage: 42
+    min_width: 45
+  snippet:
+    color: white
+
+finder:
+  command: fzf
+
+shell:
+  finder_command: bash
+  command: env BASH_ENV="${NAVI_HOME}/tests/helpers.sh" bash --norc --noprofile

tests/helpers.sh

@@ -0,0 +1,5 @@
+#!/usr/local/bin/env bash
+
+myhelperfn() {
+   echo "inside helper: $*"
+}

tests/no_prompt_cheats/cases.cheat

@@ -61,6 +61,9 @@ echo "foo" \
 # multiline variable -> "foo bar"
 echo "<multilinevar>"
 
+# helper -> "inside helper: 42"
+myhelperfn 42
+
 $ x: echo '2'
 $ x2: echo "$((x+10))"
 $ y: echo 'a'

tests/run

@@ -19,7 +19,7 @@ _navi() {
    local path="${NAVI_TEST_PATH:-$TEST_CHEAT_PATH}"
    path="${path//$HOME/~}"
    export NAVI_ENV_VAR_PATH="$path"
-   RUST_BACKTRACE=1 NAVI_PATH='$NAVI_ENV_VAR_PATH' "$NAVI_EXE" "$@"
+   RUST_BACKTRACE=1 NAVI_PATH='$NAVI_ENV_VAR_PATH' NAVI_CONFIG="${NAVI_HOME}/tests/config.yaml" "$NAVI_EXE" "$@"
 }
 
 _navi_cases() {