Recommended bash function doesn't force an arbitrary default

share/bash-function.txt

@@ -1,7 +1,31 @@
-wttr()
+#! /usr/bin/env bash
-{
+# If you source this file, it will set WTTR_PARAMS as well as show weather.
-    # change Paris to your default location
+
-    local request="wttr.in/${1-Paris}"
+# WTTR_PARAMS is space-separated URL parameters, many of which are single characters that can be
-    [ "$(tput cols)" -lt 125 ] && request+='?n'
+# lumped together. For example, "F q m" behaves the same as "Fqm".
-    curl -H "Accept-Language: ${LANG%_*}" --compressed "$request"
+if [[ -z "$WTTR_PARAMS" ]]; then
+  # Form localized URL parameters for curl
+  if [[ -t 1 ]] && [[ "$(tput cols)" -lt 125 ]]; then
+      WTTR_PARAMS+='n'
+  fi 2> /dev/null
+  for _token in $( locale LC_MEASUREMENT ); do
+    case $_token in
+      1) WTTR_PARAMS+='m' ;;
+      2) WTTR_PARAMS+='u' ;;
+    esac
+  done 2> /dev/null
+  unset _token
+  export WTTR_PARAMS
+fi
+
+wttr() {
+  local location="${1// /+}"
+  command shift
+  local args=""
+  for p in $WTTR_PARAMS "$@"; do
+    args+=" --data-urlencode '$p' "
+  done
+  curl -fGsS -H "Accept-Language: ${LANG%_*}" $args --compressed "wttr.in/${location}"
 }
+
+wttr "$@"