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Wed, 17 Sep 2025 16:27:28 -0400 (EDT) From: kristofferhaugsbakk@fastmail.com To: Junio C Hamano Cc: Kristoffer Haugsbakk , git@vger.kernel.org, Eric Sunshine , peff@peff.net, Patrick Steinhardt Subject: [PATCH v6 7/9] whatchanged: hint about git-log(1) and aliasing Date: Wed, 17 Sep 2025 22:24:17 +0200 Message-ID: X-Mailer: git-send-email 2.51.0.274.gdcb64e51a0f In-Reply-To: References: Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Kristoffer Haugsbakk There have been quite a few `--i-still-use-this` user reports since Git 2.51.0 was released.[1][2] And it doesn’t seem like they are reading the man page about the git-log(1) equivalent. Tell them what options to plug into git-log(1), either as a replacement command or as an alias.[3] That template produces almost the same output[4] and is arguably a plug-in replacement. Concretely, add an optional `hint` argument so that we can use it right after the initial error line. Also mention the same concrete options in the documentation while we’re at it. [1]: E.g., • https://lore.kernel.org/git/e1a69dea-bcb6-45fc-83d3-9e50d32c410b@5y5.one/ • https://lore.kernel.org/git/1011073f-9930-4360-a42f-71eb7421fe3f@chrispalmer.uk/#t • https://lore.kernel.org/git/9fcbfcc4-79f9-421f-b9a4-dc455f7db485@acm.org/#t • https://lore.kernel.org/git/83241BDE-1E0D-489A-9181-C608E9FCC17B@gmail.com/ [2]: The error message on 2.51.0 does tell them to report it, unconditionally [3]: We allow aliasing deprecated builtins now for people who are very used to the command name or just like it a lot [4]: You only get different outputs if you happen to have empty commits (no changes)[4] [5]: https://lore.kernel.org/git/20250825085428.GA367101@coredump.intra.peff.net/ Signed-off-by: Kristoffer Haugsbakk --- Notes (series): v5: Mention the aliasing hint in the commit message. v3: Add an alias hint now that that is possible. Also prefix each hint-line with `hint: `. v2: Review found a whitespace error in the prev. patch version. I found a broken footnote and wanted to expand on the last footnote. • Fix whitespace error (I should have used `ci/check-whitespace.sh v2.51.0`) • Add missing colon (:) to footnote • Expand on footnote; a sentence is enough to summarize the difference Documentation/git-whatchanged.adoc | 6 +++++- builtin/log.c | 8 +++++++- builtin/pack-redundant.c | 2 +- git-compat-util.h | 2 +- usage.c | 14 ++++++++++---- 5 files changed, 24 insertions(+), 8 deletions(-) diff --git a/Documentation/git-whatchanged.adoc b/Documentation/git-whatchanged.adoc index d21484026fe..e71d2aa2d27 100644 --- a/Documentation/git-whatchanged.adoc +++ b/Documentation/git-whatchanged.adoc @@ -24,7 +24,11 @@ Shows commit logs and diff output each commit introduces. New users are encouraged to use linkgit:git-log[1] instead. The `whatchanged` command is essentially the same as linkgit:git-log[1] -but defaults to showing the raw format diff output and skipping merges. +but defaults to showing the raw format diff output and skipping merges: + +---- +git log --raw --no-merges +---- The command is primarily kept for historical reasons; fingers of many people who learned Git long before `git log` was invented by diff --git a/builtin/log.c b/builtin/log.c index c2f8bbf8630..1d1e6e9130a 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -543,7 +543,13 @@ int cmd_whatchanged(int argc, cmd_log_init(argc, argv, prefix, &rev, &opt, &cfg); if (!cfg.i_still_use_this) - you_still_use_that("git whatchanged"); + you_still_use_that("git whatchanged", + _("\n" + "hint: You can replace 'git whatchanged ' with:\n" + "hint:\tgit log --raw --no-merges\n" + "hint: Or make an alias:\n" + "hint:\tgit config set --global alias.whatchanged 'log --raw --no-merges'\n" + "\n")); if (!rev.diffopt.output_format) rev.diffopt.output_format = DIFF_FORMAT_RAW; diff --git a/builtin/pack-redundant.c b/builtin/pack-redundant.c index fe81c293e3a..5d5ae4afa28 100644 --- a/builtin/pack-redundant.c +++ b/builtin/pack-redundant.c @@ -626,7 +626,7 @@ int cmd_pack_redundant(int argc, const char **argv, const char *prefix UNUSED, s } if (!i_still_use_this) - you_still_use_that("git pack-redundant"); + you_still_use_that("git pack-redundant", NULL); if (load_all_packs) load_all(); diff --git a/git-compat-util.h b/git-compat-util.h index 9408f463e31..398e0fac4fa 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -460,7 +460,7 @@ void warning_errno(const char *err, ...) __attribute__((format (printf, 1, 2))); void show_usage_if_asked(int ac, const char **av, const char *err); -NORETURN void you_still_use_that(const char *command_name); +NORETURN void you_still_use_that(const char *command_name, const char *hint); #ifndef NO_OPENSSL #ifdef APPLE_COMMON_CRYPTO diff --git a/usage.c b/usage.c index 35dc57eb07e..7545a616453 100644 --- a/usage.c +++ b/usage.c @@ -376,7 +376,8 @@ void bug_fl(const char *file, int line, const char *fmt, ...) va_end(ap); } -NORETURN void you_still_use_that(const char *command_name) + +NORETURN void you_still_use_that(const char *command_name, const char *hint) { struct strbuf percent_encoded = STRBUF_INIT; strbuf_add_percentencode(&percent_encoded, @@ -384,8 +385,13 @@ NORETURN void you_still_use_that(const char *command_name) STRBUF_ENCODE_SLASH); fprintf(stderr, - _("'%s' is nominated for removal.\n" - "If you still use this command, here's what you can do:\n" + _("'%s' is nominated for removal.\n"), command_name); + + if (hint) + fputs(hint, stderr); + + fprintf(stderr, + _("If you still use this command, here's what you can do:\n" "\n" "- read https://git-scm.com/docs/BreakingChanges.html\n" "- check if anyone has discussed this on the mailing\n" @@ -395,7 +401,7 @@ NORETURN void you_still_use_that(const char *command_name) " know that you still use this command and were unable\n" " to determine a suitable replacement\n" "\n"), - command_name, percent_encoded.buf); + percent_encoded.buf); strbuf_release(&percent_encoded); die(_("refusing to run without --i-still-use-this")); } -- 2.51.0.274.gdcb64e51a0f