Junio C Hamano <gitster@xxxxxxxxx> writes:
> Heh, I found another ;-)
>
> 95e98cd9 ("revision.c: use refs_for_each*() instead of
> for_each_*_submodule()", 2017-04-19), which is in the middle of
> Duy's nd/prune-in-worktree series, does this:
> ...
> when jk/consistent-h is merged into it and then "git diff-files -h"
> is run.
>
> I guess anything that calls setup_revisions() from the "git cmd -h"
> bypass need to be prepared with that
>
> check_help_option(argc, argv, usage, options);
>
> thing. Which is a bit sad, but I tend to agree with you that
> restructuring to make usage[] of everybody available to git.c
> is probably too noisy for the benefit it would give us.
For now, I will mix this in when queuing the whole thing in 'pu', as
I hate to push out something that does not even work for me to the
general public.
-- >8 --
Subject: [PATCH] diff- and log- family: handle "git cmd -h" early
"git $builtin -h" bypasses the usual repository setup and calls the
cmd_$builtin() function, expecting it to show the help text.
Unfortunately the commands in the log- and the diff- family want to
call into the revisions machinery, which by definition needs to have
a repository already discovered, before they can parse the options.
Handle the "git $builtin -h" special case very early in these
commands to work around potential issues.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
builtin/diff-files.c | 3 +++
builtin/diff-index.c | 3 +++
builtin/diff-tree.c | 3 +++
builtin/rev-list.c | 3 +++
4 files changed, 12 insertions(+)
diff --git a/builtin/diff-files.c b/builtin/diff-files.c
index 15c61fd8d1..6be1df684a 100644
--- a/builtin/diff-files.c
+++ b/builtin/diff-files.c
@@ -20,6 +20,9 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix)
int result;
unsigned options = 0;
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage(diff_files_usage);
+
init_revisions(&rev, prefix);
gitmodules_config();
git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
diff --git a/builtin/diff-index.c b/builtin/diff-index.c
index 1af373d002..02dd35ba45 100644
--- a/builtin/diff-index.c
+++ b/builtin/diff-index.c
@@ -17,6 +17,9 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
int i;
int result;
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage(diff_cache_usage);
+
init_revisions(&rev, prefix);
gitmodules_config();
git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index 5ea1c14317..f633b10b08 100644
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -105,6 +105,9 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix)
struct setup_revision_opt s_r_opt;
int read_stdin = 0;
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage(diff_tree_usage);
+
init_revisions(opt, prefix);
gitmodules_config();
git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
diff --git a/builtin/rev-list.c b/builtin/rev-list.c
index 718c6059c9..b250c515b1 100644
--- a/builtin/rev-list.c
+++ b/builtin/rev-list.c
@@ -277,6 +277,9 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
int use_bitmap_index = 0;
const char *show_progress = NULL;
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage(rev_list_usage);
+
git_config(git_default_config, NULL);
init_revisions(&revs, prefix);
revs.abbrev = DEFAULT_ABBREV;
--
2.13.0-513-g1c0955652f