ewah: support platforms that require aligned reads

diff --git a/git-difftool--helper.sh b/git-difftool--helper.sh
index e43b5d64de3d06f96063f61d4907a8a95ed1c23b..b00ed95dba9c035ee812d3a2d6db2d13a1944a33 100755 (executable)
--- a/git-difftool--helper.sh
+++ b/git-difftool--helper.sh
@@ -11,8 +11,10 @@ TOOL_MODE=diff
 # difftool.prompt controls the default prompt/no-prompt behavior
 # and is overridden with $GIT_DIFFTOOL*_PROMPT.
 should_prompt () {
-       prompt=$(git config --bool difftool.prompt || echo true)
-       if test "$prompt" = true; then
+       prompt_merge=$(git config --bool mergetool.prompt || echo true)
+       prompt=$(git config --bool difftool.prompt || echo $prompt_merge)
+       if test "$prompt" = true
+       then
                test -z "$GIT_DIFFTOOL_NO_PROMPT"
        else
                test -n "$GIT_DIFFTOOL_PROMPT"
@@ -36,35 +38,51 @@ launch_merge_tool () {
 
        # $LOCAL and $REMOTE are temporary files so prompt
        # the user with the real $MERGED name before launching $merge_tool.
-       if should_prompt; then
-               printf "\nViewing: '$MERGED'\n"
-               if use_ext_cmd; then
-                       printf "Hit return to launch '%s': " \
+       if should_prompt
+       then
+               printf "\nViewing: '%s'\n" "$MERGED"
+               if use_ext_cmd
+               then
+                       printf "Launch '%s' [Y/n]: " \
                                "$GIT_DIFFTOOL_EXTCMD"
                else
-                       printf "Hit return to launch '%s': " "$merge_tool"
+                       printf "Launch '%s' [Y/n]: " "$merge_tool"
+               fi
+               if read ans && test "$ans" = n
+               then
+                       return
                fi
-               read ans
        fi
 
-       if use_ext_cmd; then
+       if use_ext_cmd
+       then
+               export BASE
                eval $GIT_DIFFTOOL_EXTCMD '"$LOCAL"' '"$REMOTE"'
        else
                run_merge_tool "$merge_tool"
        fi
 }
 
-if ! use_ext_cmd; then
-       if test -n "$GIT_DIFF_TOOL"; then
+if ! use_ext_cmd
+then
+       if test -n "$GIT_DIFF_TOOL"
+       then
                merge_tool="$GIT_DIFF_TOOL"
        else
                merge_tool="$(get_merge_tool)" || exit
        fi
 fi
 
-# Launch the merge tool on each path provided by 'git diff'
-while test $# -gt 6
-do
-       launch_merge_tool "$1" "$2" "$5"
-       shift 7
-done
+if test -n "$GIT_DIFFTOOL_DIRDIFF"
+then
+       LOCAL="$1"
+       REMOTE="$2"
+       run_merge_tool "$merge_tool" false
+else
+       # Launch the merge tool on each path provided by 'git diff'
+       while test $# -gt 6
+       do
+               launch_merge_tool "$1" "$2" "$5"
+               shift 7
+       done
+fi