Change igex(1) into POSIX sh, simplify

1 files changed, 9 insertions, 79 deletions

diff --git a/bin/igex b/bin/igex
index 0bd36cc0..1ca23ecf 100755
--- a/bin/igex
+++ b/bin/igex
@@ -1,82 +1,12 @@
-#!/usr/bin/env bash
+#!/bin/sh
 # Run a command and ignore specified exit values.
-self=igex
-
-# Print usage information
-usage() {
-    printf '%s: usage: %s [-hv] -i IGNORE1[,IGNORE2...] [--] COMMAND [ARG1...]\n' \
-        "$self" "$self"
-}
-
-# Array with exit values to ignore
-declare -a ignores
-ignores=()
-
-# Flag for whether to print diagnostics to stderr or not; defaults to off
-declare -i verbose
-verbose=0
-
-# Process options
-while getopts 'hvi:' opt ; do
-    case $opt in
-
-        # -h: Print help
-        h)
-            usage
-            exit 0
-            ;;
-
-        # -v: Print diagnostics to stderr
-        v)
-            verbose=1
-            ;;
-
-        # Specify the comma-delimited signals to ignore
-        i)
-            IFS=, read -a ignores < <(printf '%s\n' "$OPTARG")
-            ;;
-
-        # Unknown option
-        \?)
-            usage >&2
-            exit 2
-            ;;
-    esac
-done
-shift "$((OPTIND-1))"
-
-# Check we have at least one ignore value
-if ! ((${#ignores[@]})) ; then
-    usage >&2
-    exit 2
-fi
-
-# Check that all the ignore values are non-zero
-for ignore in "${ignores[@]}" ; do
-    ((ignore != 0)) && continue
-    usage >&2
-    exit 2
-done
-
-# Check we have some arguments left to run a command
-if ! (($#)) ; then
-    usage >&2
-    exit 2
-fi
-
-# Run the command and save its exit value
+igs=$1,
+shift
 "$@"
-ret=$?
-
-# Iterate through the ignored exit values and reset the exit value to 0 if it
-# matches any of them, including a warning to stderr if -v was specified
-for ignore in "${ignores[@]}" ; do
-    ((ret != ignore)) && continue
-    ((verbose)) && printf '%s: Ignoring exit value %u\n' \
-        "$self" "$ignore" >&2
-    ret=0
-    break
+ex=$?
+while [ -n "$igs" ] ; do
+    ig=${igs%%,*}
+    [ "$((ig == ex))" -eq 1 ] && exit 0
+    igs=${igs#*,}
 done
-
-# Exit with the determined value
-exit "$ret"
+exit "$ex"