#!/bin/sh
# git-difftool-helper is a GIT_EXTERNAL_DIFF-compatible diff tool launcher.
-# It supports kdiff3, kompare, tkdiff, xxdiff, meld, opendiff,
-# emerge, ecmerge, vimdiff, gvimdiff, and custom user-configurable tools.
# This script is typically launched by using the 'git difftool'
# convenience command.
#
# Set GIT_DIFFTOOL_NO_PROMPT to bypass the per-file prompt.
should_prompt () {
- ! test -n "$GIT_DIFFTOOL_NO_PROMPT"
-}
-
-# Should we keep the backup .orig file?
-keep_backup_mode="$(git config --bool merge.keepBackup || echo true)"
-keep_backup () {
- test "$keep_backup_mode" = "true"
-}
-
-# This function manages the backup .orig file.
-# A backup $MERGED.orig file is created if changes are detected.
-cleanup_temp_files () {
- if test -n "$MERGED"; then
- if keep_backup && test "$MERGED" -nt "$BACKUP"; then
- test -f "$BACKUP" && mv -- "$BACKUP" "$MERGED.orig"
- else
- rm -f -- "$BACKUP"
- fi
- fi
-}
-
-# This is called when users Ctrl-C out of git-difftool-helper
-sigint_handler () {
- cleanup_temp_files
- exit 1
+ test -z "$GIT_DIFFTOOL_NO_PROMPT"
}
# This function prepares temporary files and launches the appropriate
LOCAL="$2"
REMOTE="$3"
BASE="$1"
- ext="$$$(expr "$MERGED" : '.*\(\.[^/]*\)$')"
- BACKUP="$MERGED.BACKUP.$ext"
-
- # Create and ensure that we clean up $BACKUP
- test -f "$MERGED" && cp -- "$MERGED" "$BACKUP"
- trap sigint_handler INT
# $LOCAL and $REMOTE are temporary files so prompt
# the user with the real $MERGED name before launching $merge_tool.
"$merge_tool_path" --auto \
--L1 "$basename (A)" \
--L2 "$basename (B)" \
- -o "$MERGED" "$LOCAL" "$REMOTE" \
+ "$LOCAL" "$REMOTE" \
> /dev/null 2>&1
;;
;;
tkdiff)
- "$merge_tool_path" -o "$MERGED" "$LOCAL" "$REMOTE"
+ "$merge_tool_path" "$LOCAL" "$REMOTE"
;;
meld)
"$merge_tool_path" "$LOCAL" "$REMOTE"
;;
+ diffuse)
+ "$merge_tool_path" "$LOCAL" "$REMOTE" | cat
+ ;;
+
vimdiff)
- "$merge_tool_path" -c "wincmd l" "$LOCAL" "$REMOTE"
+ "$merge_tool_path" -d -c "wincmd l" "$LOCAL" "$REMOTE"
;;
gvimdiff)
- "$merge_tool_path" -c "wincmd l" -f "$LOCAL" "$REMOTE"
+ "$merge_tool_path" -d -c "wincmd l" -f "$LOCAL" "$REMOTE"
;;
xxdiff)
"$merge_tool_path" \
- -X \
- -R 'Accel.SaveAsMerged: "Ctrl-S"' \
-R 'Accel.Search: "Ctrl+F"' \
-R 'Accel.SearchForward: "Ctrl-G"' \
- --merged-file "$MERGED" \
"$LOCAL" "$REMOTE"
;;
opendiff)
- "$merge_tool_path" "$LOCAL" "$REMOTE" \
- -merge "$MERGED" | cat
+ "$merge_tool_path" "$LOCAL" "$REMOTE" | cat
;;
ecmerge)
fi
;;
esac
-
- cleanup_temp_files
}
-# Verifies that mergetool.<tool>.cmd exists
+# Verifies that (difftool|mergetool).<tool>.cmd exists
valid_custom_tool() {
+ merge_tool_cmd="$(git config difftool.$1.cmd)"
+ test -z "$merge_tool_cmd" &&
merge_tool_cmd="$(git config mergetool.$1.cmd)"
test -n "$merge_tool_cmd"
}
}
# Sets up the merge_tool_path variable.
-# This handles the mergetool.<tool>.path configuration.
+# This handles the difftool.<tool>.path configuration.
+# This also falls back to mergetool defaults.
init_merge_tool_path() {
+ merge_tool_path=$(git config difftool."$1".path)
+ test -z "$merge_tool_path" &&
merge_tool_path=$(git config mergetool."$1".path)
if test -z "$merge_tool_path"; then
case "$1" in
+ vimdiff)
+ merge_tool_path=vim
+ ;;
+ gvimdiff)
+ merge_tool_path=gvim
+ ;;
emerge)
merge_tool_path=emacs
;;
fi
}
-# Allow the GIT_MERGE_TOOL variable to provide a default value
+# Allow GIT_DIFF_TOOL and GIT_MERGE_TOOL to provide default values
test -n "$GIT_MERGE_TOOL" && merge_tool="$GIT_MERGE_TOOL"
+test -n "$GIT_DIFF_TOOL" && merge_tool="$GIT_DIFF_TOOL"
-# If not merge tool was specified then use the merge.tool
+# If merge tool was not specified then use the diff.tool
# configuration variable. If that's invalid then reset merge_tool.
+# Fallback to merge.tool.
if test -z "$merge_tool"; then
+ merge_tool=$(git config diff.tool)
+ test -z "$merge_tool" &&
merge_tool=$(git config merge.tool)
if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then
- echo >&2 "git config option merge.tool set to unknown tool: $merge_tool"
+ echo >&2 "git config option diff.tool set to unknown tool: $merge_tool"
echo >&2 "Resetting to default..."
unset merge_tool
fi
if test -n "$DISPLAY"; then
# If gnome then prefer meld, otherwise, prefer kdiff3 or kompare
if test -n "$GNOME_DESKTOP_SESSION_ID" ; then
- merge_tool_candidates="meld kdiff3 kompare tkdiff xxdiff gvimdiff"
+ merge_tool_candidates="meld kdiff3 kompare tkdiff xxdiff gvimdiff diffuse"
else
- merge_tool_candidates="kdiff3 kompare tkdiff xxdiff meld gvimdiff"
+ merge_tool_candidates="kdiff3 kompare tkdiff xxdiff meld gvimdiff diffuse"
fi
fi
if echo "${VISUAL:-$EDITOR}" | grep 'emacs' > /dev/null 2>&1; then