contrib: remove git-diffall

The functionality of the "git diffall" script in contrib/ was
incorporated into "git difftool" when the --dir-diff option was added
in v1.7.11 (ca. June, 2012).  Once difftool learned those features,
the diffall script became obsolete.

The only difference in behavior is that when comparing to the working
tree, difftool copies any files modified by the user back to the
working tree when the diff tool exits.  "git diffall" required the
--copy-back option to do the same.  All other diffall options have the
same meaning in difftool.

Make life easier for people choosing a tool to use by removing the old
diffall script.  A pointer in the release notes should be enough to
help current users migrate.

Helped-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 257 deletions

diff --git a/contrib/diffall/git-diffall b/contrib/diffall/git-diffall
deleted file mode 100755
index 84f2b654d7..0000000000
--- a/contrib/diffall/git-diffall
+++ /dev/null
@@ -1,257 +0,0 @@
-#!/bin/sh
-# Copyright 2010 - 2012, Tim Henigan <tim.henigan@gmail.com>
-#
-# Perform a directory diff between commits in the repository using
-# the external diff or merge tool specified in the user's config.
-
-USAGE='[--cached] [--copy-back] [-x|--extcmd=<command>] <commit>{0,2} [-- <path>*]
-
-    --cached     Compare to the index rather than the working tree.
-
-    --copy-back  Copy files back to the working tree when the diff
-                 tool exits (in case they were modified by the
-                 user).  This option is only valid if the diff
-                 compared with the working tree.
-
-    -x=<command>
-    --extcmd=<command>  Specify a custom command for viewing diffs.
-                 git-diffall ignores the configured defaults and
-                 runs $command $LOCAL $REMOTE when this option is
-                 specified. Additionally, $BASE is set in the
-                 environment.
-'
-
-SUBDIRECTORY_OK=1
-. "$(git --exec-path)/git-sh-setup"
-
-TOOL_MODE=diff
-. "$(git --exec-path)/git-mergetool--lib"
-
-merge_tool="$(get_merge_tool)"
-if test -z "$merge_tool"
-then
-	echo "Error: Either the 'diff.tool' or 'merge.tool' option must be set."
-	usage
-fi
-
-start_dir=$(pwd)
-
-# All the file paths returned by the diff command are relative to the root
-# of the working copy. So if the script is called from a subdirectory, it
-# must switch to the root of working copy before trying to use those paths.
-cdup=$(git rev-parse --show-cdup) &&
-cd "$cdup" || {
-	echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
-	exit 1
-}
-
-# set up temp dir
-tmp=$(perl -e 'use File::Temp qw(tempdir);
-	$t=tempdir("/tmp/git-diffall.XXXXX") or exit(1);
-	print $t') || exit 1
-trap 'rm -rf "$tmp"' EXIT
-
-left=
-right=
-paths=
-dashdash_seen=
-compare_staged=
-merge_base=
-left_dir=
-right_dir=
-diff_tool=
-copy_back=
-
-while test $# != 0
-do
-	case "$1" in
-	-h|--h|--he|--hel|--help)
-		usage
-		;;
-	--cached)
-		compare_staged=1
-		;;
-	--copy-back)
-		copy_back=1
-		;;
-	-x|--e|--ex|--ext|--extc|--extcm|--extcmd)
-		if test $# = 1
-		then
-			echo You must specify the tool for use with --extcmd
-			usage
-		else
-			diff_tool=$2
-			shift
-		fi
-		;;
-	--)
-		dashdash_seen=1
-		;;
-	-*)
-		echo Invalid option: "$1"
-		usage
-		;;
-	*)
-		# could be commit, commit range or path limiter
-		case "$1" in
-		*...*)
-			left=${1%...*}
-			right=${1#*...}
-			merge_base=1
-			;;
-		*..*)
-			left=${1%..*}
-			right=${1#*..}
-			;;
-		*)
-			if test -n "$dashdash_seen"
-			then
-				paths="$paths$1 "
-			elif test -z "$left"
-			then
-				left=$1
-			elif test -z "$right"
-			then
-				right=$1
-			else
-				paths="$paths$1 "
-			fi
-			;;
-		esac
-		;;
-	esac
-	shift
-done
-
-# Determine the set of files which changed
-if test -n "$left" && test -n "$right"
-then
-	left_dir="cmt-$(git rev-parse --short $left)"
-	right_dir="cmt-$(git rev-parse --short $right)"
-
-	if test -n "$compare_staged"
-	then
-		usage
-	elif test -n "$merge_base"
-	then
-		git diff --name-only "$left"..."$right" -- $paths >"$tmp/filelist"
-	else
-		git diff --name-only "$left" "$right" -- $paths >"$tmp/filelist"
-	fi
-elif test -n "$left"
-then
-	left_dir="cmt-$(git rev-parse --short $left)"
-
-	if test -n "$compare_staged"
-	then
-		right_dir="staged"
-		git diff --name-only --cached "$left" -- $paths >"$tmp/filelist"
-	else
-		right_dir="working_tree"
-		git diff --name-only "$left" -- $paths >"$tmp/filelist"
-	fi
-else
-	left_dir="HEAD"
-
-	if test -n "$compare_staged"
-	then
-		right_dir="staged"
-		git diff --name-only --cached -- $paths >"$tmp/filelist"
-	else
-		right_dir="working_tree"
-		git diff --name-only -- $paths >"$tmp/filelist"
-	fi
-fi
-
-# Exit immediately if there are no diffs
-if test ! -s "$tmp/filelist"
-then
-	exit 0
-fi
-
-if test -n "$copy_back" && test "$right_dir" != "working_tree"
-then
-	echo "--copy-back is only valid when diff includes the working tree."
-	exit 1
-fi
-
-# Create the named tmp directories that will hold the files to be compared
-mkdir -p "$tmp/$left_dir" "$tmp/$right_dir"
-
-# Populate the tmp/right_dir directory with the files to be compared
-while read name
-do
-	if test -n "$right"
-	then
-		ls_list=$(git ls-tree $right "$name")
-		if test -n "$ls_list"
-		then
-			mkdir -p "$tmp/$right_dir/$(dirname "$name")"
-			git show "$right":"$name" >"$tmp/$right_dir/$name" || true
-		fi
-	elif test -n "$compare_staged"
-	then
-		ls_list=$(git ls-files -- "$name")
-		if test -n "$ls_list"
-		then
-			mkdir -p "$tmp/$right_dir/$(dirname "$name")"
-			git show :"$name" >"$tmp/$right_dir/$name"
-		fi
-	else
-		if test -e "$name"
-		then
-			mkdir -p "$tmp/$right_dir/$(dirname "$name")"
-			cp "$name" "$tmp/$right_dir/$name"
-		fi
-	fi
-done < "$tmp/filelist"
-
-# Populate the tmp/left_dir directory with the files to be compared
-while read name
-do
-	if test -n "$left"
-	then
-		ls_list=$(git ls-tree $left "$name")
-		if test -n "$ls_list"
-		then
-			mkdir -p "$tmp/$left_dir/$(dirname "$name")"
-			git show "$left":"$name" >"$tmp/$left_dir/$name" || true
-		fi
-	else
-		if test -n "$compare_staged"
-		then
-			ls_list=$(git ls-tree HEAD "$name")
-			if test -n "$ls_list"
-			then
-				mkdir -p "$tmp/$left_dir/$(dirname "$name")"
-				git show HEAD:"$name" >"$tmp/$left_dir/$name"
-			fi
-		else
-			mkdir -p "$tmp/$left_dir/$(dirname "$name")"
-			git show :"$name" >"$tmp/$left_dir/$name"
-		fi
-	fi
-done < "$tmp/filelist"
-
-LOCAL="$tmp/$left_dir"
-REMOTE="$tmp/$right_dir"
-
-if test -n "$diff_tool"
-then
-	export BASE
-	eval $diff_tool '"$LOCAL"' '"$REMOTE"'
-else
-	run_merge_tool "$merge_tool" false
-fi
-
-# Copy files back to the working dir, if requested
-if test -n "$copy_back" && test "$right_dir" = "working_tree"
-then
-	cd "$start_dir"
-	git_top_dir=$(git rev-parse --show-toplevel)
-	find "$tmp/$right_dir" -type f |
-	while read file
-	do
-		cp "$file" "$git_top_dir/${file#$tmp/$right_dir/}"
-	done
-fi