From 8c67cad1f2bbcaabe23586643d670ba08f3d2a05 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Wed, 8 Jun 2016 22:30:19 -0400
Subject: Clean up.  Mostly have error handling be a mode.

You probably want to ignore whitespace change when viewing this diff.
---
 emacsterm.sh.in | 48 +++++++++++++++++++++---------------------------
 1 file changed, 21 insertions(+), 27 deletions(-)

(limited to 'emacsterm.sh.in')

diff --git a/emacsterm.sh.in b/emacsterm.sh.in
index 3340bea..6ecbed3 100644
--- a/emacsterm.sh.in
+++ b/emacsterm.sh.in
@@ -1,6 +1,6 @@
 #!@bash@
 
-# Copyright (C) 2011, 2013-2014 Luke Shumaker <lukeshu@sbcglobal.net>
+# Copyright (C) 2011, 2013-2014, 2016 Luke Shumaker <lukeshu@sbcglobal.net>
 #
 # This file is not considered part of GNU Emacs.
 #
@@ -33,13 +33,15 @@ usage() {
 
 
 main() {
+	declare mode
 	declare mimic
 	declare cmd
 	declare -a flags
 	parse "$@"
 
-	emacsclient "${flags[@]}" --eval \
-		"(term $(emacs_quote "${cmd}"))"
+	next \
+	    emacsclient "${flags[@]}" --eval \
+	    "(term $(emacs_quote "${cmd}"))"
 }
 
 # Sets the 'global' variables:
@@ -48,15 +50,14 @@ main() {
 # - cmd
 # - flags (array)
 parse() {
+	mode=normal
 	mimic=rxvt
 	cmd=
 	flags=()
-	
-	local mode=normal
-	local error=false
+
 	emacs_getopt_init
 
-	while [[ $# -gt 0 ]]; do
+	while [[ $# -gt 0 ]] && [ "$mode" != error ]; do
 		case "$1" in
 			-V|--version) shift; mode=version;;
 			-H|--help) shift; mode=usage;;
@@ -69,25 +70,18 @@ parse() {
 		esac
 	done
 
-	if $error; then
-		usage >&2
-		exit 1
-	fi
-	case "$mode" in
-		usage) usage; exit 0;;
-		version) version; exit 0;;
-	esac
-
-	if [[ -z "$cmd" ]]; then
-		# This matches rxvt's behavior.
-		# This is simpler than xterm's behavior.
-		cmd="${cmd:-${SHELL:-/bin/sh}}"
-	fi
+	# This matches rxvt's behavior.
+	# This is simpler than xterm's behavior.
+	cmd="${cmd:-${SHELL:-/bin/sh}}"
 }
 
 # Return status is the number of things to shift
 parse_emacs_getopt() {
 	declare -a flag
+	# Because we don't want options to get combined, we run getopt
+	# with : stripped, so that we can check that it returned 2
+	# arguments: the flag itself, and '--'.  If there were
+	# combined flags, then it will return more than 2 arguments.
 	if eval "flag=($(getopt -a \
 	                        -n "$0" \
 	                        -o "${emacs_getopt_o//:/}" \
@@ -103,12 +97,12 @@ parse_emacs_getopt() {
 				return 2
 			else
 				# Missing the required 2nd part
-				getopt -a \
+				getopt -Q -a \
 					   -n "$0" \
 					   -o "$emacs_getopt_o" \
 					   -l "$emacs_getopt_l" \
-					   -- "$flag" >/dev/null
-				error=true
+					   -- "$flag"
+				mode=error
 				return 1
 			fi
 		else
@@ -119,8 +113,8 @@ parse_emacs_getopt() {
 	else
 		# getopt either didn't work, or did combined flags
 		# Have getopt display its own error message:
-		getopt -a -n "$0" -o '' -l '' -- "$1" >/dev/null
-		error=true
+		getopt -Q -a -n "$0" -o '' -l '' -- "$1"
+		mode=error
 		return 1
 	fi
 }
@@ -153,7 +147,7 @@ parse_shell() {
 	else
 		shift
 		error "extra arguments: %s" "$*"
-		error=true
+		mode=error
 	fi
 }
 
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