Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
 builtin/add.c | 103 +++++++++++++++++++++++++---------------------------------
 pathspec.c    |  43 ------------------------
 2 files changed, 45 insertions(+), 101 deletions(-)

diff --git a/builtin/add.c b/builtin/add.c
index f45d9d4..9a7235e 100644
--- a/builtin/add.c
+++ b/builtin/add.c
@@ -226,21 +226,6 @@ static char *prune_directory(struct dir_struct *dir, const 
char **pathspec,
        return seen;
 }
 
-/*
- * Checks the index to see whether any path in pathspec refers to
- * something inside a submodule.  If so, dies with an error message.
- */
-static void treat_gitlinks(const char **pathspec)
-{
-       int i;
-
-       if (!pathspec || !*pathspec)
-               return;
-
-       for (i = 0; pathspec[i]; i++)
-               pathspec[i] = check_path_for_gitlink(pathspec[i]);
-}
-
 static void refresh(int verbose, const char **pathspec)
 {
        char *seen;
@@ -258,25 +243,6 @@ static void refresh(int verbose, const char **pathspec)
         free(seen);
 }
 
-/*
- * Normalizes argv relative to prefix, via get_pathspec(), and then
- * runs die_if_path_beyond_symlink() on each path in the normalized
- * list.
- */
-static const char **validate_pathspec(const char **argv, const char *prefix)
-{
-       const char **pathspec = get_pathspec(prefix, argv);
-
-       if (pathspec) {
-               const char **p;
-               for (p = pathspec; *p; p++) {
-                       die_if_path_beyond_symlink(*p, prefix);
-               }
-       }
-
-       return pathspec;
-}
-
 int run_add_interactive(const char *revision, const char *patch_mode,
                        const char **pathspec)
 {
@@ -308,17 +274,23 @@ int run_add_interactive(const char *revision, const char 
*patch_mode,
 
 int interactive_add(int argc, const char **argv, const char *prefix, int patch)
 {
-       const char **pathspec = NULL;
+       struct pathspec pathspec;
 
-       if (argc) {
-               pathspec = validate_pathspec(argv, prefix);
-               if (!pathspec)
-                       return -1;
-       }
+       /*
+        * git-add--interactive itself does not parse pathspec. It
+        * simply passes the pathspec to other builtin commands. Let's
+        * hope all of them support all magic, or we'll need to limit
+        * the magic here. There is still a problem with prefix. But
+        * that'll be worked on later on.
+        */
+       parse_pathspec(&pathspec, PATHSPEC_ALL_MAGIC & ~PATHSPEC_FROMTOP,
+                      PATHSPEC_PREFER_FULL |
+                      PATHSPEC_SYMLINK_LEADING_PATH,
+                      prefix, argv);
 
        return run_add_interactive(NULL,
                                   patch ? "--patch" : NULL,
-                                  pathspec);
+                                  pathspec.raw);
 }
 
 static int edit_patch(int argc, const char **argv, const char *prefix)
@@ -445,7 +417,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 {
        int exit_status = 0;
        int newfd;
-       const char **pathspec;
+       struct pathspec pathspec;
        struct dir_struct dir;
        int flags;
        int add_new_files;
@@ -526,11 +498,19 @@ int cmd_add(int argc, const char **argv, const char 
*prefix)
                fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
                return 0;
        }
-       pathspec = validate_pathspec(argv, prefix);
 
        if (read_cache() < 0)
                die(_("index file corrupt"));
-       treat_gitlinks(pathspec);
+
+       /*
+        * Check the "pathspec '%s' did not match any files" block
+        * below before enabling new magic.
+        */
+       parse_pathspec(&pathspec, 0,
+                      PATHSPEC_PREFER_FULL |
+                      PATHSPEC_SYMLINK_LEADING_PATH |
+                      PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE,
+                      prefix, argv);
 
        if (add_new_files) {
                int baselen;
@@ -543,34 +523,40 @@ int cmd_add(int argc, const char **argv, const char 
*prefix)
                }
 
                /* This picks up the paths that are not tracked */
-               baselen = fill_directory(&dir, implicit_dot ? NULL : pathspec);
-               if (pathspec)
-                       seen = prune_directory(&dir, pathspec, baselen,
+               baselen = fill_directory(&dir, implicit_dot ? NULL : 
pathspec.raw);
+               if (pathspec.nr)
+                       seen = prune_directory(&dir, pathspec.raw, baselen,
                                        implicit_dot ? WARN_IMPLICIT_DOT : 0);
        }
 
        if (refresh_only) {
-               refresh(verbose, pathspec);
+               refresh(verbose, pathspec.raw);
                goto finish;
        }
        if (implicit_dot && prefix)
                refresh_cache(REFRESH_QUIET);
 
-       if (pathspec) {
+       if (pathspec.nr) {
                int i;
 
                if (!seen)
-                       seen = find_pathspecs_matching_against_index(pathspec);
-               for (i = 0; pathspec[i]; i++) {
-                       if (!seen[i] && pathspec[i][0]
-                           && !file_exists(pathspec[i])) {
+                       seen = 
find_pathspecs_matching_against_index(pathspec.raw);
+
+               /*
+                * file_exists() assumes exact match
+                */
+               GUARD_PATHSPEC(&pathspec, PATHSPEC_FROMTOP);
+
+               for (i = 0; pathspec.raw[i]; i++) {
+                       if (!seen[i] && pathspec.raw[i][0]
+                           && !file_exists(pathspec.raw[i])) {
                                if (ignore_missing) {
                                        int dtype = DT_UNKNOWN;
-                                       if (is_excluded(&dir, pathspec[i], 
&dtype))
-                                               dir_add_ignored(&dir, 
pathspec[i], strlen(pathspec[i]));
+                                       if (is_excluded(&dir, pathspec.raw[i], 
&dtype))
+                                               dir_add_ignored(&dir, 
pathspec.raw[i], strlen(pathspec.raw[i]));
                                } else
                                        die(_("pathspec '%s' did not match any 
files"),
-                                           pathspec[i]);
+                                           pathspec.raw[i]);
                        }
                }
                free(seen);
@@ -586,10 +572,11 @@ int cmd_add(int argc, const char **argv, const char 
*prefix)
                 */
                update_data.implicit_dot = prefix;
                update_data.implicit_dot_len = strlen(prefix);
-               pathspec = NULL;
+               free_pathspec(&pathspec);
+               memset(&pathspec, 0, sizeof(pathspec));
        }
        update_data.flags = flags & ~ADD_CACHE_IMPLICIT_DOT;
-       update_files_in_cache(prefix, pathspec, &update_data);
+       update_files_in_cache(prefix, pathspec.raw, &update_data);
 
        exit_status |= !!update_data.add_errors;
        if (add_new_files)
diff --git a/pathspec.c b/pathspec.c
index 5c9631a..2774bda 100644
--- a/pathspec.c
+++ b/pathspec.c
@@ -58,49 +58,6 @@ char *find_pathspecs_matching_against_index(const char 
**pathspec)
 }
 
 /*
- * Check the index to see whether path refers to a submodule, or
- * something inside a submodule.  If the former, returns the path with
- * any trailing slash stripped.  If the latter, dies with an error
- * message.
- */
-const char *check_path_for_gitlink(const char *path)
-{
-       int i, path_len = strlen(path);
-       for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
-               if (S_ISGITLINK(ce->ce_mode)) {
-                       int ce_len = ce_namelen(ce);
-                       if (path_len <= ce_len || path[ce_len] != '/' ||
-                           memcmp(ce->name, path, ce_len))
-                               /* path does not refer to this
-                                * submodule or anything inside it */
-                               continue;
-                       if (path_len == ce_len + 1) {
-                               /* path refers to submodule;
-                                * strip trailing slash */
-                               return xstrndup(ce->name, ce_len);
-                       } else {
-                               die (_("Path '%s' is in submodule '%.*s'"),
-                                    path, ce_len, ce->name);
-                       }
-               }
-       }
-       return path;
-}
-
-/*
- * Dies if the given path refers to a file inside a symlinked
- * directory in the index.
- */
-void die_if_path_beyond_symlink(const char *path, const char *prefix)
-{
-       if (has_symlink_leading_path(path, strlen(path))) {
-               int len = prefix ? strlen(prefix) : 0;
-               die(_("'%s' is beyond a symbolic link"), path + len);
-       }
-}
-
-/*
  * Magic pathspec
  *
  * Possible future magic semantics include stuff like:
-- 
1.8.2.83.gc99314b

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