diff options
| -rw-r--r-- | builtin/difftool.c | 13 | ||||
| -rw-r--r-- | git.c | 2 | ||||
| -rwxr-xr-x | t/t7800-difftool.sh | 10 |
3 files changed, 21 insertions, 4 deletions
diff --git a/builtin/difftool.c b/builtin/difftool.c index 31eece0c8d..4fff1e83f9 100644 --- a/builtin/difftool.c +++ b/builtin/difftool.c @@ -690,7 +690,7 @@ static int run_file_diff(int prompt, const char *prefix, int cmd_difftool(int argc, const char **argv, const char *prefix) { int use_gui_tool = 0, dir_diff = 0, prompt = -1, symlinks = 0, - tool_help = 0; + tool_help = 0, no_index = 0; static char *difftool_cmd = NULL, *extcmd = NULL; struct option builtin_difftool_options[] = { OPT_BOOL('g', "gui", &use_gui_tool, @@ -714,6 +714,7 @@ int cmd_difftool(int argc, const char **argv, const char *prefix) "tool returns a non - zero exit code")), OPT_STRING('x', "extcmd", &extcmd, N_("command"), N_("specify a custom command for viewing diffs")), + OPT_ARGUMENT("no-index", &no_index, N_("passed to `diff`")), OPT_END() }; @@ -727,8 +728,14 @@ int cmd_difftool(int argc, const char **argv, const char *prefix) if (tool_help) return print_tool_help(); - setenv(GIT_DIR_ENVIRONMENT, absolute_path(get_git_dir()), 1); - setenv(GIT_WORK_TREE_ENVIRONMENT, absolute_path(get_git_work_tree()), 1); + if (!no_index && !startup_info->have_repository) + die(_("difftool requires worktree or --no-index")); + + if (!no_index){ + setup_work_tree(); + setenv(GIT_DIR_ENVIRONMENT, absolute_path(get_git_dir()), 1); + setenv(GIT_WORK_TREE_ENVIRONMENT, absolute_path(get_git_work_tree()), 1); + } if (use_gui_tool && diff_gui_tool && *diff_gui_tool) setenv("GIT_DIFF_TOOL", diff_gui_tool, 1); @@ -491,7 +491,7 @@ static struct cmd_struct commands[] = { { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT }, { "diff-index", cmd_diff_index, RUN_SETUP | NO_PARSEOPT }, { "diff-tree", cmd_diff_tree, RUN_SETUP | NO_PARSEOPT }, - { "difftool", cmd_difftool, RUN_SETUP | NEED_WORK_TREE }, + { "difftool", cmd_difftool, RUN_SETUP_GENTLY }, { "fast-export", cmd_fast_export, RUN_SETUP }, { "fetch", cmd_fetch, RUN_SETUP }, { "fetch-pack", cmd_fetch_pack, RUN_SETUP | NO_PARSEOPT }, diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh index bb9a7f4ff9..480dd0633f 100755 --- a/t/t7800-difftool.sh +++ b/t/t7800-difftool.sh @@ -705,4 +705,14 @@ test_expect_success SYMLINKS 'difftool --dir-diff handles modified symlinks' ' test_cmp expect actual ' +test_expect_success 'outside worktree' ' + echo 1 >1 && + echo 2 >2 && + test_expect_code 1 nongit git \ + -c diff.tool=echo -c difftool.echo.cmd="echo \$LOCAL \$REMOTE" \ + difftool --no-prompt --no-index ../1 ../2 >actual && + echo "../1 ../2" >expect && + test_cmp expect actual +' + test_done |