Submodules: Use "ignore" settings from .gitmodules too for diff and status

diff --git a/diff.c b/diff.c
index 17873f3d9e88fccbf98e790d243397dcc4ccb24b..8206047314f1b12d7322d3aa08412c7f9d91b0a3 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -141,6 +141,9 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
                return 0;
        }
 
+       if (!prefixcmp(var, "submodule."))
+               return parse_submodule_config_option(var, value);
+
        return git_color_default_config(var, value, cb);
 }
 
@@ -3166,11 +3169,13 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
                DIFF_OPT_SET(options, ALLOW_TEXTCONV);
        else if (!strcmp(arg, "--no-textconv"))
                DIFF_OPT_CLR(options, ALLOW_TEXTCONV);
-       else if (!strcmp(arg, "--ignore-submodules"))
+       else if (!strcmp(arg, "--ignore-submodules")) {
+               DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
                handle_ignore_submodules_arg(options, "all");
-       else if (!prefixcmp(arg, "--ignore-submodules="))
+       } else if (!prefixcmp(arg, "--ignore-submodules=")) {
+               DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
                handle_ignore_submodules_arg(options, arg + 20);
-       else if (!strcmp(arg, "--submodule"))
+       } else if (!strcmp(arg, "--submodule"))
                DIFF_OPT_SET(options, SUBMODULE_LOG);
        else if (!prefixcmp(arg, "--submodule=")) {
                if (!strcmp(arg + 12, "log"))
@@ -4103,6 +4108,24 @@ int diff_result_code(struct diff_options *opt, int status)
        return result;
 }
 
+/*
+ * Shall changes to this submodule be ignored?
+ *
+ * Submodule changes can be configured to be ignored separately for each path,
+ * but that configuration can be overridden from the command line.
+ */
+static int is_submodule_ignored(const char *path, struct diff_options *options)
+{
+       int ignored = 0;
+       unsigned orig_flags = options->flags;
+       if (!DIFF_OPT_TST(options, OVERRIDE_SUBMODULE_CONFIG))
+               set_diffopt_flags_from_submodule_config(options, path);
+       if (DIFF_OPT_TST(options, IGNORE_SUBMODULES))
+               ignored = 1;
+       options->flags = orig_flags;
+       return ignored;
+}
+
 void diff_addremove(struct diff_options *options,
                    int addremove, unsigned mode,
                    const unsigned char *sha1,
@@ -4110,7 +4133,7 @@ void diff_addremove(struct diff_options *options,
 {
        struct diff_filespec *one, *two;
 
-       if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(mode))
+       if (S_ISGITLINK(mode) && is_submodule_ignored(concatpath, options))
                return;
 
        /* This may look odd, but it is a preparation for
@@ -4157,8 +4180,8 @@ void diff_change(struct diff_options *options,
 {
        struct diff_filespec *one, *two;
 
-       if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(old_mode)
-                       && S_ISGITLINK(new_mode))
+       if (S_ISGITLINK(old_mode) && S_ISGITLINK(new_mode) &&
+           is_submodule_ignored(concatpath, options))
                return;
 
        if (DIFF_OPT_TST(options, REVERSE_DIFF)) {