diff: add diff.orderfile configuration variable

diff.orderfile acts as a default for the -O command line option.

[sb: split up aw's original patch; rework tests and docs, treat option
as pathname]

Signed-off-by: Anders Waldenborg <anders@0x63.nu>
Signed-off-by: Samuel Bronson <naesten@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/diff-config.txt b/Documentation/diff-config.txt
index 223b9310df0990accdb0d43b096bd52856f56bef..f07b4513ed76978e3bb7ef02ebf31d504f7098ff 100644 (file)
--- a/Documentation/diff-config.txt
+++ b/Documentation/diff-config.txt
@@ -98,6 +98,11 @@ diff.mnemonicprefix::
 diff.noprefix::
        If set, 'git diff' does not show any source or destination prefix.
 
+diff.orderfile::
+       File indicating how to order files within a diff, using
+       one shell glob pattern per line.
+       Can be overridden by the '-O' option to linkgit:git-diff[1].
+
 diff.renameLimit::
        The number of files to consider when performing the copy/rename
        detection; equivalent to the 'git diff' option '-l'.

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index bbed2cd79c6ebbb95e3b66b5f1ccaa3762d9dfce..9b37b2a10b94449b73aeceadae175d52ee081e4e 100644 (file)
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -432,6 +432,9 @@ endif::git-format-patch[]
 -O<orderfile>::
        Output the patch in the order specified in the
        <orderfile>, which has one shell glob pattern per line.
+       This overrides the `diff.orderfile` configuration variable
+       (see linkgit:git-config[1]).  To cancel `diff.orderfile`,
+       use `-O/dev/null`.
 
 ifndef::git-format-patch[]
 -R::

diff --git a/diff.c b/diff.c
index 3950e01910674c15d8af2c0d5d114402f43b1a9c..0099b995993de0d29866b3d128bbe8893b7a0439 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -30,6 +30,7 @@ static int diff_use_color_default = -1;
 static int diff_context_default = 3;
 static const char *diff_word_regex_cfg;
 static const char *external_diff_cmd_cfg;
+static const char *diff_order_file_cfg;
 int diff_auto_refresh_index = 1;
 static int diff_mnemonic_prefix;
 static int diff_no_prefix;
@@ -201,6 +202,8 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
                return git_config_string(&external_diff_cmd_cfg, var, value);
        if (!strcmp(var, "diff.wordregex"))
                return git_config_string(&diff_word_regex_cfg, var, value);
+       if (!strcmp(var, "diff.orderfile"))
+               return git_config_pathname(&diff_order_file_cfg, var, value);
 
        if (!strcmp(var, "diff.ignoresubmodules"))
                handle_ignore_submodules_arg(&default_diff_options, value);
@@ -3207,6 +3210,8 @@ void diff_setup(struct diff_options *options)
        options->detect_rename = diff_detect_rename_default;
        options->xdl_opts |= diff_algorithm;
 
+       options->orderfile = diff_order_file_cfg;
+
        if (diff_no_prefix) {
                options->a_prefix = options->b_prefix = "";
        } else if (!diff_mnemonic_prefix) {

diff --git a/t/t4056-diff-order.sh b/t/t4056-diff-order.sh
index ae8036b73a58db3a16545b775904a97faa7677ae..1ddd226b7850dbeecba255e2b4f4164ce2ff8b67 100755 (executable)
--- a/t/t4056-diff-order.sh
+++ b/t/t4056-diff-order.sh
@@ -89,6 +89,16 @@ do
                wait &&
                test_cmp expect_$i actual
        '
+
+       test_expect_success "orderfile using config ($i)" '
+               git -c diff.orderfile=order_file_$i diff --name-only HEAD^..HEAD >actual &&
+               test_cmp expect_$i actual
+       '
+
+       test_expect_success "cancelling configured orderfile ($i)" '
+               git -c diff.orderfile=order_file_$i diff -O/dev/null --name-only HEAD^..HEAD >actual &&
+               test_cmp expect_none actual
+       '
 done
 
 test_done