Since 2dce956 is_git_command() is a bit slow as it does file I/O in the
call to list_commands_in_dir(). Avoid the file I/O by adding an early
check for internal commands.

Signed-off-by: Sebastian Schuberth <sschube...@gmail.com>
---
 Documentation/technical/api-builtin.txt |   4 +-
 builtin.h                               |   2 +
 builtin/help.c                          |   3 +
 git.c                                   | 242 +++++++++++++++++---------------
 4 files changed, 134 insertions(+), 117 deletions(-)

diff --git a/Documentation/technical/api-builtin.txt 
b/Documentation/technical/api-builtin.txt
index 150a02a..e3d6e7a 100644
--- a/Documentation/technical/api-builtin.txt
+++ b/Documentation/technical/api-builtin.txt
@@ -14,8 +14,8 @@ Git:
 
 . Add the external declaration for the function to `builtin.h`.
 
-. Add the command to `commands[]` table in `handle_builtin()`,
-  defined in `git.c`.  The entry should look like:
+. Add the command to the `commands[]` table defined in `git.c`.
+  The entry should look like:
 
        { "foo", cmd_foo, <options> },
 +
diff --git a/builtin.h b/builtin.h
index d4afbfe..c47c110 100644
--- a/builtin.h
+++ b/builtin.h
@@ -27,6 +27,8 @@ extern int fmt_merge_msg(struct strbuf *in, struct strbuf 
*out,
 
 extern int textconv_object(const char *path, unsigned mode, const unsigned 
char *sha1, int sha1_valid, char **buf, unsigned long *buf_size);
 
+extern int is_builtin(const char *s);
+
 extern int cmd_add(int argc, const char **argv, const char *prefix);
 extern int cmd_annotate(int argc, const char **argv, const char *prefix);
 extern int cmd_apply(int argc, const char **argv, const char *prefix);
diff --git a/builtin/help.c b/builtin/help.c
index b6fc15e..1fdefeb 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -288,6 +288,9 @@ static struct cmdnames main_cmds, other_cmds;
 
 static int is_git_command(const char *s)
 {
+       if (is_builtin(s))
+               return 1;
+
        load_command_list("git-", &main_cmds, &other_cmds);
        return is_in_cmdlist(&main_cmds, s) ||
                is_in_cmdlist(&other_cmds, s);
diff --git a/git.c b/git.c
index 89ab5d7..bba4378 100644
--- a/git.c
+++ b/git.c
@@ -332,124 +332,136 @@ static int run_builtin(struct cmd_struct *p, int argc, 
const char **argv)
        return 0;
 }
 
+static struct cmd_struct commands[] = {
+       { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
+       { "annotate", cmd_annotate, RUN_SETUP },
+       { "apply", cmd_apply, RUN_SETUP_GENTLY },
+       { "archive", cmd_archive },
+       { "bisect--helper", cmd_bisect__helper, RUN_SETUP },
+       { "blame", cmd_blame, RUN_SETUP },
+       { "branch", cmd_branch, RUN_SETUP },
+       { "bundle", cmd_bundle, RUN_SETUP_GENTLY },
+       { "cat-file", cmd_cat_file, RUN_SETUP },
+       { "check-attr", cmd_check_attr, RUN_SETUP },
+       { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE },
+       { "check-mailmap", cmd_check_mailmap, RUN_SETUP },
+       { "check-ref-format", cmd_check_ref_format },
+       { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
+       { "checkout-index", cmd_checkout_index,
+               RUN_SETUP | NEED_WORK_TREE},
+       { "cherry", cmd_cherry, RUN_SETUP },
+       { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE },
+       { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE },
+       { "clone", cmd_clone },
+       { "column", cmd_column, RUN_SETUP_GENTLY },
+       { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE },
+       { "commit-tree", cmd_commit_tree, RUN_SETUP },
+       { "config", cmd_config, RUN_SETUP_GENTLY },
+       { "count-objects", cmd_count_objects, RUN_SETUP },
+       { "credential", cmd_credential, RUN_SETUP_GENTLY },
+       { "describe", cmd_describe, RUN_SETUP },
+       { "diff", cmd_diff },
+       { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE },
+       { "diff-index", cmd_diff_index, RUN_SETUP },
+       { "diff-tree", cmd_diff_tree, RUN_SETUP },
+       { "fast-export", cmd_fast_export, RUN_SETUP },
+       { "fetch", cmd_fetch, RUN_SETUP },
+       { "fetch-pack", cmd_fetch_pack, RUN_SETUP },
+       { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
+       { "for-each-ref", cmd_for_each_ref, RUN_SETUP },
+       { "format-patch", cmd_format_patch, RUN_SETUP },
+       { "fsck", cmd_fsck, RUN_SETUP },
+       { "fsck-objects", cmd_fsck, RUN_SETUP },
+       { "gc", cmd_gc, RUN_SETUP },
+       { "get-tar-commit-id", cmd_get_tar_commit_id },
+       { "grep", cmd_grep, RUN_SETUP_GENTLY },
+       { "hash-object", cmd_hash_object },
+       { "help", cmd_help },
+       { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
+       { "init", cmd_init_db },
+       { "init-db", cmd_init_db },
+       { "log", cmd_log, RUN_SETUP },
+       { "ls-files", cmd_ls_files, RUN_SETUP },
+       { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
+       { "ls-tree", cmd_ls_tree, RUN_SETUP },
+       { "mailinfo", cmd_mailinfo },
+       { "mailsplit", cmd_mailsplit },
+       { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
+       { "merge-base", cmd_merge_base, RUN_SETUP },
+       { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
+       { "merge-index", cmd_merge_index, RUN_SETUP },
+       { "merge-ours", cmd_merge_ours, RUN_SETUP },
+       { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
+       { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | 
NEED_WORK_TREE },
+       { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | 
NEED_WORK_TREE },
+       { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
+       { "merge-tree", cmd_merge_tree, RUN_SETUP },
+       { "mktag", cmd_mktag, RUN_SETUP },
+       { "mktree", cmd_mktree, RUN_SETUP },
+       { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
+       { "name-rev", cmd_name_rev, RUN_SETUP },
+       { "notes", cmd_notes, RUN_SETUP },
+       { "pack-objects", cmd_pack_objects, RUN_SETUP },
+       { "pack-redundant", cmd_pack_redundant, RUN_SETUP },
+       { "pack-refs", cmd_pack_refs, RUN_SETUP },
+       { "patch-id", cmd_patch_id },
+       { "pickaxe", cmd_blame, RUN_SETUP },
+       { "prune", cmd_prune, RUN_SETUP },
+       { "prune-packed", cmd_prune_packed, RUN_SETUP },
+       { "push", cmd_push, RUN_SETUP },
+       { "read-tree", cmd_read_tree, RUN_SETUP },
+       { "receive-pack", cmd_receive_pack },
+       { "reflog", cmd_reflog, RUN_SETUP },
+       { "remote", cmd_remote, RUN_SETUP },
+       { "remote-ext", cmd_remote_ext },
+       { "remote-fd", cmd_remote_fd },
+       { "repack", cmd_repack, RUN_SETUP },
+       { "replace", cmd_replace, RUN_SETUP },
+       { "rerere", cmd_rerere, RUN_SETUP },
+       { "reset", cmd_reset, RUN_SETUP },
+       { "rev-list", cmd_rev_list, RUN_SETUP },
+       { "rev-parse", cmd_rev_parse },
+       { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
+       { "rm", cmd_rm, RUN_SETUP },
+       { "send-pack", cmd_send_pack, RUN_SETUP },
+       { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER },
+       { "show", cmd_show, RUN_SETUP },
+       { "show-branch", cmd_show_branch, RUN_SETUP },
+       { "show-ref", cmd_show_ref, RUN_SETUP },
+       { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
+       { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
+       { "stripspace", cmd_stripspace },
+       { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
+       { "tag", cmd_tag, RUN_SETUP },
+       { "unpack-file", cmd_unpack_file, RUN_SETUP },
+       { "unpack-objects", cmd_unpack_objects, RUN_SETUP },
+       { "update-index", cmd_update_index, RUN_SETUP },
+       { "update-ref", cmd_update_ref, RUN_SETUP },
+       { "update-server-info", cmd_update_server_info, RUN_SETUP },
+       { "upload-archive", cmd_upload_archive },
+       { "upload-archive--writer", cmd_upload_archive_writer },
+       { "var", cmd_var, RUN_SETUP_GENTLY },
+       { "verify-pack", cmd_verify_pack },
+       { "verify-tag", cmd_verify_tag, RUN_SETUP },
+       { "version", cmd_version },
+       { "whatchanged", cmd_whatchanged, RUN_SETUP },
+       { "write-tree", cmd_write_tree, RUN_SETUP },
+};
+
+int is_builtin(const char *s)
+{
+       int i;
+       for (i = 0; i < ARRAY_SIZE(commands); i++) {
+               struct cmd_struct *p = commands+i;
+               if (!strcmp(s, p->cmd))
+                       return 1;
+       }
+       return 0;
+}
+
 static void handle_builtin(int argc, const char **argv)
 {
        const char *cmd = argv[0];
-       static struct cmd_struct commands[] = {
-               { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
-               { "annotate", cmd_annotate, RUN_SETUP },
-               { "apply", cmd_apply, RUN_SETUP_GENTLY },
-               { "archive", cmd_archive },
-               { "bisect--helper", cmd_bisect__helper, RUN_SETUP },
-               { "blame", cmd_blame, RUN_SETUP },
-               { "branch", cmd_branch, RUN_SETUP },
-               { "bundle", cmd_bundle, RUN_SETUP_GENTLY },
-               { "cat-file", cmd_cat_file, RUN_SETUP },
-               { "check-attr", cmd_check_attr, RUN_SETUP },
-               { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE 
},
-               { "check-mailmap", cmd_check_mailmap, RUN_SETUP },
-               { "check-ref-format", cmd_check_ref_format },
-               { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
-               { "checkout-index", cmd_checkout_index,
-                       RUN_SETUP | NEED_WORK_TREE},
-               { "cherry", cmd_cherry, RUN_SETUP },
-               { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE },
-               { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE },
-               { "clone", cmd_clone },
-               { "column", cmd_column, RUN_SETUP_GENTLY },
-               { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE },
-               { "commit-tree", cmd_commit_tree, RUN_SETUP },
-               { "config", cmd_config, RUN_SETUP_GENTLY },
-               { "count-objects", cmd_count_objects, RUN_SETUP },
-               { "credential", cmd_credential, RUN_SETUP_GENTLY },
-               { "describe", cmd_describe, RUN_SETUP },
-               { "diff", cmd_diff },
-               { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE },
-               { "diff-index", cmd_diff_index, RUN_SETUP },
-               { "diff-tree", cmd_diff_tree, RUN_SETUP },
-               { "fast-export", cmd_fast_export, RUN_SETUP },
-               { "fetch", cmd_fetch, RUN_SETUP },
-               { "fetch-pack", cmd_fetch_pack, RUN_SETUP },
-               { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
-               { "for-each-ref", cmd_for_each_ref, RUN_SETUP },
-               { "format-patch", cmd_format_patch, RUN_SETUP },
-               { "fsck", cmd_fsck, RUN_SETUP },
-               { "fsck-objects", cmd_fsck, RUN_SETUP },
-               { "gc", cmd_gc, RUN_SETUP },
-               { "get-tar-commit-id", cmd_get_tar_commit_id },
-               { "grep", cmd_grep, RUN_SETUP_GENTLY },
-               { "hash-object", cmd_hash_object },
-               { "help", cmd_help },
-               { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
-               { "init", cmd_init_db },
-               { "init-db", cmd_init_db },
-               { "log", cmd_log, RUN_SETUP },
-               { "ls-files", cmd_ls_files, RUN_SETUP },
-               { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
-               { "ls-tree", cmd_ls_tree, RUN_SETUP },
-               { "mailinfo", cmd_mailinfo },
-               { "mailsplit", cmd_mailsplit },
-               { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
-               { "merge-base", cmd_merge_base, RUN_SETUP },
-               { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
-               { "merge-index", cmd_merge_index, RUN_SETUP },
-               { "merge-ours", cmd_merge_ours, RUN_SETUP },
-               { "merge-recursive", cmd_merge_recursive, RUN_SETUP | 
NEED_WORK_TREE },
-               { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | 
NEED_WORK_TREE },
-               { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | 
NEED_WORK_TREE },
-               { "merge-subtree", cmd_merge_recursive, RUN_SETUP | 
NEED_WORK_TREE },
-               { "merge-tree", cmd_merge_tree, RUN_SETUP },
-               { "mktag", cmd_mktag, RUN_SETUP },
-               { "mktree", cmd_mktree, RUN_SETUP },
-               { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
-               { "name-rev", cmd_name_rev, RUN_SETUP },
-               { "notes", cmd_notes, RUN_SETUP },
-               { "pack-objects", cmd_pack_objects, RUN_SETUP },
-               { "pack-redundant", cmd_pack_redundant, RUN_SETUP },
-               { "pack-refs", cmd_pack_refs, RUN_SETUP },
-               { "patch-id", cmd_patch_id },
-               { "pickaxe", cmd_blame, RUN_SETUP },
-               { "prune", cmd_prune, RUN_SETUP },
-               { "prune-packed", cmd_prune_packed, RUN_SETUP },
-               { "push", cmd_push, RUN_SETUP },
-               { "read-tree", cmd_read_tree, RUN_SETUP },
-               { "receive-pack", cmd_receive_pack },
-               { "reflog", cmd_reflog, RUN_SETUP },
-               { "remote", cmd_remote, RUN_SETUP },
-               { "remote-ext", cmd_remote_ext },
-               { "remote-fd", cmd_remote_fd },
-               { "repack", cmd_repack, RUN_SETUP },
-               { "replace", cmd_replace, RUN_SETUP },
-               { "rerere", cmd_rerere, RUN_SETUP },
-               { "reset", cmd_reset, RUN_SETUP },
-               { "rev-list", cmd_rev_list, RUN_SETUP },
-               { "rev-parse", cmd_rev_parse },
-               { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
-               { "rm", cmd_rm, RUN_SETUP },
-               { "send-pack", cmd_send_pack, RUN_SETUP },
-               { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER },
-               { "show", cmd_show, RUN_SETUP },
-               { "show-branch", cmd_show_branch, RUN_SETUP },
-               { "show-ref", cmd_show_ref, RUN_SETUP },
-               { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
-               { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
-               { "stripspace", cmd_stripspace },
-               { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
-               { "tag", cmd_tag, RUN_SETUP },
-               { "unpack-file", cmd_unpack_file, RUN_SETUP },
-               { "unpack-objects", cmd_unpack_objects, RUN_SETUP },
-               { "update-index", cmd_update_index, RUN_SETUP },
-               { "update-ref", cmd_update_ref, RUN_SETUP },
-               { "update-server-info", cmd_update_server_info, RUN_SETUP },
-               { "upload-archive", cmd_upload_archive },
-               { "upload-archive--writer", cmd_upload_archive_writer },
-               { "var", cmd_var, RUN_SETUP_GENTLY },
-               { "verify-pack", cmd_verify_pack },
-               { "verify-tag", cmd_verify_tag, RUN_SETUP },
-               { "version", cmd_version },
-               { "whatchanged", cmd_whatchanged, RUN_SETUP },
-               { "write-tree", cmd_write_tree, RUN_SETUP },
-       };
        int i;
        static const char ext[] = STRIP_EXTENSION;
 
-- 
1.8.3-mingw-1


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