path: root/reflog-walk.h
AgeCommit message (Collapse)Author
2019-05-05*.[ch]: manually align parameter listsDenton Liu
In previous patches, extern was mechanically removed from function declarations without care to formatting, causing parameter lists to be misaligned. Manually format changed sections such that the parameter lists should be realigned. Viewing this patch with 'git diff -w' should produce no output. Signed-off-by: Denton Liu <> Signed-off-by: Junio C Hamano <>
2019-05-05*.[ch]: remove extern from function declarations using spatchDenton Liu
There has been a push to remove extern from function declarations. Remove some instances of "extern" for function declarations which are caught by Coccinelle. Note that Coccinelle has some difficulty with processing functions with `__attribute__` or varargs so some `extern` declarations are left behind to be dealt with in a future patch. This was the Coccinelle patch used: @@ type T; identifier f; @@ - extern T f(...); and it was run with: $ git ls-files \*.{c,h} | grep -v ^compat/ | xargs spatch --sp-file contrib/coccinelle/noextern.cocci --in-place Files under `compat/` are intentionally excluded as some are directly copied from external sources and we should avoid churning them as much as possible. Signed-off-by: Denton Liu <> Signed-off-by: Junio C Hamano <>
2018-08-15Add missing includes and forward declarationsElijah Newren
I looped over the toplevel header files, creating a temporary two-line C program for each consisting of #include "git-compat-util.h" #include $HEADER This patch is the result of manually fixing errors in compiling those tiny programs. Signed-off-by: Elijah Newren <> Signed-off-by: Junio C Hamano <>
2017-07-09reflog-walk: apply --since/--until to reflog datesJeff King
When doing a reflog walk, we use the commit's date to do any date limiting. In earlier versions of Git, this could lead to nonsense results, since a skipped commit would truncate the traversal. So a sequence like: git commit ... git checkout week-old-branch git checkout - git log -g would stop at the week-old-branch, even though the "git commit" entry further back is still interesting. As of the prior commit, which uses a parent-less traversal of the reflog, you get the whole reflog minus any commits whose dates do not match the specified options. This is arguably useful, as you could scan the reflogs for commits that originated in a certain range. But more likely a user doing a reflog walk wants to limit based on the reflog entries themselves. You can simulate --until with: git log -g @{} but there's no way to ask Git to traverse only back to a certain date. E.g.: # show me reflog entries from the past day git log -g This patch teaches the revision machinery to prefer the reflog entry dates to the commit dates when doing a reflog walk. Technically this is a change in behavior that affects plumbing, but the previous behavior was so buggy that it's unlikely anyone was relying on it. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2017-07-09reflog-walk: stop using fake parentsJeff King
The reflog-walk system works by putting a ref's tip into the pending queue, and then "traversing" the reflog by pretending that the parent of each commit is the previous reflog entry. This causes a number of user-visible oddities, as documented in t1414 (and the commit message which introduced it). We can fix all of them in one go by replacing the fake-reflog system with a much simpler one: just keeping a list of reflogs to show, and walking through them entry by entry. The implementation is fairly straight-forward, but there are a few items to note: 1. We obviously must skip calling add_parents_to_list() when we are traversing reflogs, since we do not want to walk the original parents at all. As a result, we must call try_to_simplify_commit() ourselves. There are other parts of add_parents_to_list() we skip, as well, but none of them should matter for a reflog traversal: - We do not allow UNINTERESTING commits, nor symmetric ranges (and we bail when these are used with "-g"). - Using --source makes no sense, since we aren't traversing. The reflog selector shows the same information with more detail. - Using --first-parent is still sensible, since you may want to see the first-parent diff for each entry. But since we're not traversing, we don't need to cull the parent list here. 2. Since we now just walk the reflog entries themselves, rather than starting with the ref tip, we now look at the "new" field of each entry rather than the "old" (i.e., we are showing entries, not faking parents). This removes all of the tricky logic around skipping past root commits. But note that we have no way to show an entry with the null sha1 in its "new" field (because such a commit obviously does not exist). Normally this would not happen, since we delete reflogs along with refs, but there is one special case. When we rename the currently checked out branch, we write two reflog entries into the HEAD log: one where the commit goes away, and another where it comes back. Prior to this commit, we show both entries with identical reflog messages. After this commit, we show only the "comes back" entry. See the update in t3200 which demonstrates this. Arguably either is fine, as the whole double-entry thing is a bit hacky in the first place. And until a recent fix, we truncated the traversal in such a case anyway, which was _definitely_ wrong. 3. We show individual reflogs in order, but choose which reflog to show at each stage based on which has the most recent timestamp. This interleaves the output from multiple reflogs based on date order, which is probably what you'd want with limiting like "-n 30". Note that the implementation aims for simplicity. It does a linear walk over the reflog queue for each commit it pulls, which may perform badly if you interleave an enormous number of reflogs. That seems like an unlikely use case; if we did want to handle it, we could probably keep a priority queue of reflogs, ordered by the timestamp of their current tip entry. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2017-07-09rev-list: check reflog_info before showing usageJeff King
When git-rev-list sees no pending commits, it shows a usage message. This works even when reflog-walking is requested, because the reflog-walk code currently puts the reflog tips into the pending queue. In preparation for refactoring the reflog-walk code, let's explicitly check whether we have any reflogs to walk. For now this is a noop, but the existing reflog tests will make sure that it kicks in after the refactoring. Likewise, we'll add a test that "rev-list -g" without specifying any reflogs continues to fail (so that we know our check does not kick in too aggressively). Note that the implementation needs to go into its own sub-function, as the walk code does not expose its innards outside of reflog-walk.c. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2015-06-29convert "enum date_mode" into a structJeff King
In preparation for adding date modes that may carry extra information beyond the mode itself, this patch converts the date_mode enum into a struct. Most of the conversion is fairly straightforward; we pass the struct as a pointer and dereference the type field where necessary. Locations that declare a date_mode can use a "{}" constructor. However, the tricky case is where we use the enum labels as constants, like: show_date(t, tz, DATE_NORMAL); Ideally we could say: show_date(t, tz, &{ DATE_NORMAL }); but of course C does not allow that. Likewise, we cannot cast the constant to a struct, because we need to pass an actual address. Our options are basically: 1. Manually add a "struct date_mode d = { DATE_NORMAL }" definition to each caller, and pass "&d". This makes the callers uglier, because they sometimes do not even have their own scope (e.g., they are inside a switch statement). 2. Provide a pre-made global "date_normal" struct that can be passed by address. We'd also need "date_rfc2822", "date_iso8601", and so forth. But at least the ugliness is defined in one place. 3. Provide a wrapper that generates the correct struct on the fly. The big downside is that we end up pointing to a single global, which makes our wrapper non-reentrant. But show_date is already not reentrant, so it does not matter. This patch implements 3, along with a minor macro to keep the size of the callers sane. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2014-09-02stylefix: asterisks stick to the variable, not the typeDavid Aguilar
Signed-off-by: David Aguilar <> Signed-off-by: Junio C Hamano <>
2012-05-11Merge branch 'jk/maint-reflog-walk-count-vs-time'Junio C Hamano
Gives a better DWIM behaviour for --pretty=format:%gd, "stash list", and "log -g", depending on how the starting point ("master" vs "master@{0}" vs "master@{now}") and date formatting options (e.g. "--date=iso") are given on the command line. By Jeff King (4) and Junio C Hamano (1) * jk/maint-reflog-walk-count-vs-time: reflog-walk: tell explicit --date=default from not having --date at all reflog-walk: always make HEAD@{0} show indexed selectors reflog-walk: clean up "flag" field of commit_reflog struct log: respect date_mode_explicit with --format:%gd t1411: add more selector index/date tests
2012-05-07reflog-walk: tell explicit --date=default from not having --date at allJunio C Hamano
Introduction of opt->date_mode_explicit was a step in the right direction, but lost that crucial bit at the very end of the callchain, and the callee could not tell an explicitly specified "I want *date* but in default format" from the built-in default value passed when there was no --date specified. Signed-off-by: Junio C Hamano <>
2011-12-16pretty: give placeholders to reflog identityJeff King
When doing a reflog walk, you can get some information about the reflog (such as the subject line), but not the identity information (i.e., name and email). Let's make those available, mimicing the options for author and committer identity. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2009-10-20Introduce new pretty formats %g[sdD] for reflog informationThomas Rast
Add three new --pretty=format escapes: %gD long reflog descriptor (e.g. refs/stash@{0}) %gd short reflog descriptor (e.g. stash@{0}) %gs reflog message This is achieved by passing down the reflog info, if any, inside the pretty_print_context struct. We use the newly refactored get_reflog_selector(), and give it some extra functionality to extract a shortened ref. The shortening is cached inside the commit_reflogs struct; the only allocation of it happens in read_complete_reflog(), where it is initialised to 0. Also add another helper get_reflog_message() for the message extraction. Note that the --format="%h %gD: %gs" tests may not work in real repositories, as the --pretty formatter doesn't know to leave away the ": " on the last commit in an incomplete (because git-gc removed the old part) reflog. This equivalence is nevertheless the main goal of this patch. Thanks to Jeff King for reviews, the %gd testcase and documentation. Signed-off-by: Thomas Rast <> Signed-off-by: Junio C Hamano <>
2009-03-20make oneline reflog dates more consistent with multiline formatJeff King
The multiline reflog format (e.g., as shown by "git log -g") will show HEAD@{<date>} rather than HEAD@{<count>} in two situations: 1. If the user gave branch@{<date>} syntax to specify the reflog 2. If the user gave a --date=<format> specifier It uses the "normal" date format in case 1, and the user-specified format in case 2. The oneline reflog format (e.g., "git reflog show" or "git log -g --oneline") will show the date in the same two circumstances. However, it _always_ shows the date as a relative date, and it always ignores the timezone. In case 2, it seems ridiculous to trigger the date but use a format totally different from what the user requested. For case 1, it is arguable that the user might want to see the relative date by default; however, the multiline version shows the normal format. This patch does three things: - refactors the "relative_date" parameter to show_reflog_message to be an actual date_mode enum, since this is how it is used (it is passed to show_date) - uses the passed date_mode parameter in the oneline format (making it consistent with the multiline format) - does not ignore the timezone parameter in oneline mode Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2007-07-25git log -g: Complain, but do not fail, when no reflogs are thereJohannes Schindelin
When asking "git log -g --all", clearly you want to see only those refs that do have reflogs, but you do not want it to fail, either. So instead of die()ing, complain about it, but move on to the other refs. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2007-02-09log --reflog: honour --relative-dateJohannes Schindelin
If you say "git log -g --relative-date", it is very likely that you want to see the reflog names in terms of a relative date. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2007-01-21Fix --walk-reflog with --pretty=onelineJunio C Hamano
Now, "git log --abbrev-commit --pretty=o --walk-reflogs HEAD" is reasonably pleasant to use. Signed-off-by: Junio C Hamano <>
2007-01-21Teach the revision walker to walk by reflogs with --walk-reflogsJohannes Schindelin
When called with "--walk-reflogs", as long as there are reflogs available, the walker will take this information into account, rather than the parent information in the commit object. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>