Port eds(1) to POSIX sh(1)

Even managed to keep the options.

Removed issue about Bash scripts; han(1) needs to be Bash as it's
specifically for the Bash help() builtin. There's no advantage to making
it POSIX.

1 files changed, 37 insertions, 38 deletions

diff --git a/bin/eds b/bin/eds
index 2afd0a07..3d0fceed 100755
--- a/bin/eds
+++ b/bin/eds
@@ -1,53 +1,52 @@
-#!/usr/bin/env bash
+#!/bin/sh
 # Create and edit executable scripts in a directory EDSPATH (defaults to ~/.local/bin)
 
-# Give up completely if no BASH_VERSINFO (<2.0)
-[ -n "$BASH_VERSINFO" ] || exit
-
-# Process options, including detecting requests for help
-declare -a opts
-for arg ; do
-    case $arg in
-        --)
-            shift
-            break
-            ;;
-        -*)
-            shift
-            opts[${#opts[@]}]=$arg
-            ;;
-    esac
-done
-
-# Need at least one file after options are parsed out
-if ! (($#)) ; then
+# Need at least one script name
+if [ "$#" -eq 0 ] ; then
     printf >&2 'eds: Need at least one script name\n'
     exit 2
 fi
 
 # Create the script directory if it doesn't exist yet
-edspath=${EDSPATH:-$HOME/.local/bin}
-if [[ ! -d $edspath ]] ; then
-    mkdir -p -- "$edspath" || exit
+ep=${EDSPATH:-$HOME/.local/bin}
+if ! [ -d "$ep" ] ; then
+    mkdir -p -- "$ep" || exit
 fi
 
-# Create a new array with the script directory prepended to the given names
-declare -a files
-files=("${@/#/"$edspath"/}")
+# Warn if that's not in $PATH
+case :$PATH: in
+    *:"$ep":*) ;;
+    *)
+        printf >&2 'eds: warning: %s not in PATH\n' "$ep"
+        ;;
+esac
 
-# Collect the names of any scripts that don't exist yet so we can make them
-# executable after we're done editing
-declare -a creations
-for file in "${files[@]}" ; do
-    [[ -e $file ]] && continue
-    creations[${#creations[@]}]=$file
+# Prepend the path to each of the names given if they don't look like options
+for arg ; do
+    [ -n "$reset" ] || set -- && reset=1
+    case $arg in
+        --)
+            optend=1
+            set -- "$@" "$arg"
+            continue
+            ;;
+        -*)
+            if [ -z "$optend" ] ; then
+                set -- "$@" "$arg"
+                continue
+            fi
+            ;;
+    esac
+    optend=1
+    set -- "$@" "$ep"/"$arg"
 done
 
-# Run the editor; if EDITOR isn't set, use ed(1)
-"${VISUAL:-"${EDITOR:-ed}"}" "${opts[@]}" -- "${files[@]}"
+# Run the editor over the arguments
+echo "${VISUAL:-"${EDITOR:-ed}"}" "$@"
+exit
 
 # Make any created scripts executable if they now appear to be files
-for creation in "${creations[@]}" ; do
-    [[ -f $creation ]] || continue
-    chmod +x -- "$creation"
+for script ; do
+    [ -f "$script" ] || continue
+    chmod +x -- "$script"
 done