Subject: [PATCH 2/2] Feature Request: user defined suffix for temp files created by git-mergetool

From: Josef Ridky <[email-masked]>
Date: Thu, 6 Oct 2016 09:09:26 -0400 (EDT)

This is the second of two variant for request to add option to change
suffix of name of temporary files generated by git mergetool. This
change is requested for cases, when is git mergetool used for local
comparison between two version of same package during package rebase.

Signed-off-by: Josef Ridky <[email-masked]>
---
 Documentation/git-mergetool.txt | 26 ++++++++++++++++++++++++-
 git-mergetool.sh                | 43 ++++++++++++++++++++++++++++++++++++-----
 2 files changed, 63 insertions(+), 6 deletions(-)

diff --git a/Documentation/git-mergetool.txt b/Documentation/git-mergetool.txt
index e846c2e..6cf5935 100644
--- a/Documentation/git-mergetool.txt
+++ b/Documentation/git-mergetool.txt
@@ -8,7 +8,7 @@ git-mergetool - Run merge conflict resolution tools to resolve merge conflicts
 SYNOPSIS
 --------
 [verse]
-'git mergetool' [--tool=<tool>] [-y | --[no-]prompt] [<file>...]
+'git mergetool' [--tool=<tool>] [-y | --[no-]prompt] [--local=<name>] [--remote=<name>] [--backup=<name>] [--base=<name>] [<file>...]
 
 DESCRIPTION
 -----------
@@ -79,6 +79,30 @@ success of the resolution after the custom tool has exited.
 	Prompt before each invocation of the merge resolution program
 	to give the user a chance to skip the path.
 
+--local=<name>::
+	Use string from <name> as part of suffix of name of temporary
+	file (local) for merging. If not used or is equal with any
+	other (remote|backup|base), default value is used.
+	Default suffix is LOCAL.
+
+--remote=<name>::
+	Use string from <name> as part of suffix of name of temporary
+	file (remote) for merging. If not used or is equal with any
+	other (local|backup|base), default value is used.
+	Default suffix is REMOTE.
+
+--backup=<name>::
+	Use string from <name> as part of suffix of name of temporary
+	file (backup) for merging. If not used or is equal with any
+	other (local|remote|base), default value is used.
+	Default suffix is BACKUP.
+
+--base=<name>::
+	Use string from <name> as part of suffix of name of temporary
+	file (base) for merging. If not used or is equal with any
+	other (local|remote|backup), default value is used.
+	Default suffix is BASE.
+
 TEMPORARY FILES
 ---------------
 `git mergetool` creates `*.orig` backup files while resolving merges.
diff --git a/git-mergetool.sh b/git-mergetool.sh
index bf86270..096ee5e 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -8,7 +8,7 @@
 # at the discretion of Junio C Hamano.
 #
 
-USAGE='[--tool=tool] [--tool-help] [-y|--no-prompt|--prompt] [file to merge] ...'
+USAGE='[--tool=tool] [--tool-help] [-y|--no-prompt|--prompt] [--local=name] [--remote=name] [--backup=name] [--base=name] [file to merge] ...'
 SUBDIRECTORY_OK=Yes
 NONGIT_OK=Yes
 OPTIONS_SPEC=
@@ -16,6 +16,12 @@ TOOL_MODE=merge
 . git-sh-setup
 . git-mergetool--lib
 
+# Can be changed by user
+LOCAL_NAME='LOCAL'
+BASE_NAME='BASE'
+BACKUP_NAME='BACKUP'
+REMOTE_NAME='REMOTE'
+
 # Returns true if the mode reflects a symlink
 is_symlink () {
 	test "$1" = 120000
@@ -271,10 +277,10 @@ merge_file () {
 		BASE=${BASE##*/}
 	fi
 
-	BACKUP="$MERGETOOL_TMPDIR/${BASE}_BACKUP_$$$ext"
-	LOCAL="$MERGETOOL_TMPDIR/${BASE}_LOCAL_$$$ext"
-	REMOTE="$MERGETOOL_TMPDIR/${BASE}_REMOTE_$$$ext"
-	BASE="$MERGETOOL_TMPDIR/${BASE}_BASE_$$$ext"
+	BACKUP="$MERGETOOL_TMPDIR/${BASE}_${BACKUP_NAME}_$$$ext"
+	LOCAL="$MERGETOOL_TMPDIR/${BASE}_${LOCAL_NAME}_$$$ext"
+	REMOTE="$MERGETOOL_TMPDIR/${BASE}_${REMOTE_NAME}_$$$ext"
+	BASE="$MERGETOOL_TMPDIR/${BASE}_${BASE_NAME}_$$$ext"
 
 	base_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==1) print $1;}')
 	local_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==2) print $1;}')
@@ -396,6 +402,33 @@ do
 	--prompt)
 		prompt=true
 		;;
+	--local=*)
+		temp_name=${1#--local=}
+		if [ "$temp_name" != "" ] && [ "$temp_name" != "$REMOTE_NAME" ] && [ "$temp_name" != "$BASE_NAME" ] && [ "$temp_name" != "$BACKUP_NAME" ]
+		then
+			LOCAL_NAME=$temp_name
+		fi
+		;;
+	--remote=*)
+		temp_name=${1#--remote=}
+		if [ "$temp_name" != "" ] && [ "$temp_name" != "$LOCAL_NAME" ] && [ "$temp_name" != "$BASE_NAME" ] && [ "$temp_name" != "$BACKUP_NAME" ]
+		then
+			REMOTE_NAME=$temp_name
+		fi
+		;;
+	--base=*)
+		temp_name=${1#--base=}
+		if [ "$temp_name" != "" ] && [ "$temp_name" != "$LOCAL_NAME" ] && [ "$temp_name" != "$REMOTE_NAME" ] && [ "$temp_name" != "$BACKUP_NAME" ]
+		then
+			BASE_NAME=$temp_name
+		fi
+		;;
+	--backup=*)
+		temp_name=${1#--backup=}
+		if [ "$temp_name" != "" ] && [ "$temp_name" != "$LOCAL_NAME" ] && [ "$temp_name" != "$REMOTE_NAME" ] && [ "$temp_name" != "$BASE_NAME" ]
+			BACKUP_NAME=$temp_name
+		fi
+		;;
 	--)
 		shift
 		break
-- 
2.7.4