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* Merge branch 'jc/sha1-name-find-fix'Junio C Hamano2010-08-121-10/+11
|\ | | | | | | | | | | | | | | * jc/sha1-name-find-fix: sha1_name.c: fix parsing of ":/token" syntax Conflicts: sha1_name.c
| * sha1_name.c: fix parsing of ":/token" syntaxJunio C Hamano2010-08-021-10/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The parser tried to clean up the object flags it used while finding commits with matching string, but was not doing a very good job at it. This caused "checkout -b new ':/token'", which internally tries to parse ':/token' twice as an object name, to fail when the commit in question was reachable from only one ref. The mask bits given to pop_most_recent_commit(&list, MASK) means "I have already been on the list to be processed, so please do not place me again even if I am found to be a parent of some other commit on the list." So mark them when we add them to the list at the beginning. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'cp/textconv-cat-file'Junio C Hamano2010-06-271-5/+26
|\ \ | | | | | | | | | | | | | | | | | | | | | * cp/textconv-cat-file: git-cat-file.txt: Document --textconv t/t8007: test textconv support for cat-file textconv: support for cat_file sha1_name: add get_sha1_with_context()
| * | sha1_name: add get_sha1_with_context()Clément Poulain2010-06-181-5/+26
| |/ | | | | | | | | | | | | | | | | | | | | Textconv is defined by the diff driver, which is associated with a pathname, not a blob. This fonction permits to know the context for the sha1 you're looking for, especially his pathname Signed-off-by: Clément Poulain <clement.poulain@ensimag.imag.fr> Signed-off-by: Diane Gasselin <diane.gasselin@ensimag.imag.fr> Signed-off-by: Axel Bonnet <axel.bonnet@ensimag.imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Make :/ accept a regex rather than a fixed patternLinus Torvalds2010-06-141-3/+9
|/ | | | | | | | This also makes it trigger anywhere in the commit message, rather than just at the beginning. Which tends to be a lot more useful. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* sha1_name: fix segfault caused by invalid index accessMarkus Heidelberg2010-02-281-14/+18
| | | | | | | | The code to see if user input "git show :path" makes sense tried to access the index without properly checking the array bound. Signed-off-by: Markus Heidelberg <markus.heidelberg@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'maint-1.6.6' into maintJunio C Hamano2010-02-161-2/+1
|\ | | | | | | | | | | | | | | * maint-1.6.6: dwim_ref: fix dangling symref warning stash pop: remove 'apply' options during 'drop' invocation diff: make sure --output=/bad/path is caught Remove hyphen from "git-command" in two error messages
| * Merge branch 'maint-1.6.5' into maint-1.6.6Junio C Hamano2010-02-161-2/+1
| |\ | | | | | | | | | | | | | | | | | | * maint-1.6.5: dwim_ref: fix dangling symref warning stash pop: remove 'apply' options during 'drop' invocation diff: make sure --output=/bad/path is caught
| | * dwim_ref: fix dangling symref warningJeff King2010-02-161-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we encounter a symref that is dangling, in most cases we will warn about it. The one exception is a dangling HEAD, as that indicates a branch yet to be born. However, the check in dwim_ref was not quite right. If we were fed something like "HEAD^0" we would try to resolve "HEAD", see that it is dangling, and then check whether the _original_ string we got was "HEAD" (which it wasn't in this case). And that makes no sense; the dangling thing we found was not "HEAD^0" but rather "HEAD". Fixing this squelches a scary warning from "submodule summary HEAD" (and consequently "git status" with status.submodulesummary set) in an empty repo, as the submodule script calls "git rev-parse -q --verify HEAD^0". Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | reject @{-1} not at beginning of object nameJeff King2010-01-281-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Something like foo@{-1} is nonsensical, as the @{-N} syntax is reserved for "the Nth last branch", and is not an actual reflog selector. We should not feed such nonsense to approxidate at all. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | fix parsing of @{-1}@{u} combinationJeff King2010-01-281-2/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | Previously interpret_branch_name would see @{-1} and stop parsing, leaving the @{u} as cruft that provoked an error. Instead, we should recurse if there is more to parse. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'jc/maint-reflog-bad-timestamp'Junio C Hamano2010-01-271-1/+4
|\ \ \ | |/ / | | | | | | | | | | | | | | | * jc/maint-reflog-bad-timestamp: t0101: use a fixed timestamp when searching in the reflog Update @{bogus.timestamp} fix not to die() approxidate_careful() reports errorneous date string
| * | Update @{bogus.timestamp} fix not to die()Junio C Hamano2010-01-271-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The caller will say "It is not a valid object name" if it wants to, and some callers may even try to see if it names an object and otherwise try to see if it is a path. Pointed out by Jeff King. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | approxidate_careful() reports errorneous date stringJunio C Hamano2010-01-261-1/+4
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For a long time, the time based reflog syntax (e.g. master@{yesterday}) didn't complain when the "human readable" timestamp was misspelled, as the underlying mechanism tried to be as lenient as possible. The funny thing was that parsing of "@{now}" even relied on the fact that anything not recognized by the machinery returned the current timestamp. Introduce approxidate_careful() that takes an optional pointer to an integer, that gets assigned 1 when the input does not make sense as a timestamp. As I am too lazy to fix all the callers that use approxidate(), most of the callers do not take advantage of the error checking, but convert the code to parse reflog to use it as a demonstration. Tests are mostly from Jeff King. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'js/refer-upstream'Junio C Hamano2010-01-221-13/+78
|\ \ | | | | | | | | | | | | | | | | | | * js/refer-upstream: Teach @{upstream} syntax to strbuf_branchanme() t1506: more test for @{upstream} syntax Introduce <branch>@{upstream} notation
| * | Teach @{upstream} syntax to strbuf_branchanme()Junio C Hamano2010-01-201-42/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This teaches @{upstream} syntax to interpret_branch_name(), instead of dwim_ref() machinery. There are places in git UI that behaves differently when you give a local branch name and when you give an extended SHA-1 expression that evaluates to the commit object name at the tip of the branch. The intent is that the special syntax such as @{-1} can stand in as if the user spelled the name of the branch in such places. The name of the branch "frotz" to switch to ("git checkout frotz"), and the name of the branch "nitfol" to fork a new branch "frotz" from ("git checkout -b frotz nitfol"), are examples of such places. These places take only the name of the branch (e.g. "frotz"), and they are supposed to act differently to an equivalent refname (e.g. "refs/heads/frotz"), so hooking the @{upstream} and @{-N} syntax to dwim_ref() is insufficient when we want to deal with cases a local branch is forked from another local branch and use "forked@{upstream}" to name the forkee branch. The "upstream" syntax "forked@{u}" is to specify the ref that "forked" is configured to merge with, and most often the forkee is a remote tracking branch, not a local branch. We cannot simply return a local branch name, but that does not necessarily mean we have to returns the full refname (e.g. refs/remotes/origin/frotz, when returning origin/frotz is enough). This update calls shorten_unambiguous_ref() to do so. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | Introduce <branch>@{upstream} notationJohannes Schindelin2010-01-121-3/+36
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new notation '<branch>@{upstream}' refers to the branch <branch> is set to build on top of. Missing <branch> (i.e. '@{upstream}') defaults to the current branch. This allows you to run, for example, for l in list of local branches do git log --oneline --left-right $l...$l@{upstream} done to inspect each of the local branches you are interested in for the divergence from its upstream. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'jc/checkout-merge-base'Junio C Hamano2010-01-131-0/+42
|\ \ | | | | | | | | | | | | | | | | | | | | | * jc/checkout-merge-base: rebase -i: teach --onto A...B syntax rebase: fix --onto A...B parsing and add tests "rebase --onto A...B" replays history on the merge base between A and B "checkout A...B" switches to the merge base between A and B
| * | "checkout A...B" switches to the merge base between A and BJunio C Hamano2009-10-181-0/+42
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When flipping commits around on topic branches, I often end up doing this sequence: * Run "log --oneline next..jc/frotz" to find out the first commit on 'jc/frotz' branch not yet merged to 'next'; * Run "checkout $that_commit^" to detach HEAD to the parent of it; * Rebuild the series on top of that commit; and * "show-branch jc/frotz HEAD" and "diff jc/frotz HEAD" to verify. Introduce a new syntax to "git checkout" to name the commit to switch to, to make the first two steps easier. When the branch to switch to is specified as A...B (you can omit either A or B but not both, and HEAD is used instead of the omitted side), the merge base between these two commits are computed, and if there is one unique one, we detach the HEAD at that commit. With this, I can say "checkout next...jc/frotz". Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Detailed diagnosis when parsing an object name fails.Matthieu Moy2009-12-071-4/+111
|/ | | | | | | | | | | | | | The previous error message was the same in many situations (unknown revision or path not in the working tree). We try to help the user as much as possible to understand the error, especially with the sha1:filename notation. In this case, we say whether the sha1 or the filename is problematic, and diagnose the confusion between relative-to-root and relative-to-$PWD confusion precisely. The 7 new error messages are tested. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* sha1_name.c: avoid unnecessary strbuf_releaseBrandon Casey2009-07-161-2/+0
| | | | | | | | | | | | | | When we fall back to a standard for_each_reflog_ent() after failing to find the nth branch switch (or if we had a short reflog) with the call to for_each_recent_reflog_ent(), we do not need to free the memory allocated for our strbuf's since a strbuf_reset() will be performed in grab_nth_branch_switch() before assigning to the entry. Plus, the strbuf_release() negates the non-zero hint we initially gave to strbuf_init() just above these lines. Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Rename interpret/substitute nth_last_branch functionsJunio C Hamano2009-03-221-6/+6
| | | | | | | | | | | These allow you to say "git checkout @{-2}" to switch to the branch two "branch switching" ago by pretending as if you typed the name of that branch. As it is likely that we will be introducing more short-hands to write the name of a branch without writing it explicitly, rename the functions from "nth_last_branch" to more generic "branch_name", to prepare for different semantics. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Squelch overzealous "ignoring dangling symref" in an empty repositoryJunio C Hamano2009-02-111-1/+2
| | | | | | | | | | | | 057e713 (Warn use of "origin" when remotes/origin/HEAD is dangling, 2009-02-08) tried to warn dangling refs/remotes/origin/HEAD only when "origin" was used to refer to it. There was one corner case a symref is expected to be dangling and this warning is unwarranted: HEAD in an empty repository. This squelches the warning for this special case. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Warn use of "origin" when remotes/origin/HEAD is danglingJunio C Hamano2009-02-101-2/+4
| | | | | | | | The previous one squelched the diagnositic message we used to issue every time we enumerated the refs and noticed a dangling ref. This adds the warning back to the place where the user actually attempts to use it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'tr/previous-branch'Junio C Hamano2009-01-281-4/+123
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * tr/previous-branch: t1505: remove debugging cruft Simplify parsing branch switching events in reflog Introduce for_each_recent_reflog_ent(). interpret_nth_last_branch(): plug small memleak Fix reflog parsing for a malformed branch switching entry Fix parsing of @{-1}@{1} interpret_nth_last_branch(): avoid traversing the reflog twice checkout: implement "-" abbreviation, add docs and tests sha1_name: support @{-N} syntax in get_sha1() sha1_name: tweak @{-N} lookup checkout: implement "@{-N}" shortcut name for N-th last branch Conflicts: sha1_name.c
| * Simplify parsing branch switching events in reflogJunio C Hamano2009-01-211-6/+2
| | | | | | | | | | | | | | | | | | We only accept "checkout: moving from A to B" newer style reflog entries, in order to pick up A. There is no point computing where B begins at after running strstr to locate " to ", nor adding 4 and then subtracting 4 from the same pointer. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * Introduce for_each_recent_reflog_ent().Junio C Hamano2009-01-191-1/+7
| | | | | | | | | | | | | | | | | | This can be used to scan only the last few kilobytes of a reflog, as a cheap optimization when the data you are looking for is likely to be found near the end of it. The caller is expected to fall back to the full scan if that is not the case. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * interpret_nth_last_branch(): plug small memleakJunio C Hamano2009-01-191-3/+7
| | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * Fix reflog parsing for a malformed branch switching entryJunio C Hamano2009-01-191-1/+1
| | | | | | | | | | | | target can be NULL when we failed to parse the message. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * Fix parsing of @{-1}@{1}Johannes Schindelin2009-01-191-1/+24
| | | | | | | | | | | | | | | | | | To do that, Git no longer looks forward for the '@{' corresponding to the closing '}' but backward, and dwim_ref() as well as dwim_log() learnt about the @{-<N>} notation. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * interpret_nth_last_branch(): avoid traversing the reflog twiceJunio C Hamano2009-01-191-24/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | You can have quite a many reflog entries, but you typically won't recall which branch you were on after switching branches for more than several times. Instead of reading the reflog twice, this reads the branch switching event and keeps as many entries as the user asked from the latest such entries, which is the minimum required to be able to switch back to the branch we were recently on. [jc: improvements from Dscho squashed in] Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * sha1_name: support @{-N} syntax in get_sha1()Thomas Rast2009-01-171-3/+13
| | | | | | | | | | | | | | | | | | | | Let get_sha1() parse the @{-N} syntax, with docs and tests. Note that while @{-1}^2, @{-2}~5 and such are supported, @{-1}@{1} is currently not allowed. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * sha1_name: tweak @{-N} lookupThomas Rast2009-01-171-24/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Have the lookup only look at "interesting" checkouts, meaning those that tell you "Already on ..." don't count even though they also cause a reflog entry. Let interpret_nth_last_branch() return the number of characters parsed, so that git-checkout can verify that the branch spec was @{-N}, not @{-1}^2 or something like that. (The latter will be added later.) Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * checkout: implement "@{-N}" shortcut name for N-th last branchJunio C Hamano2009-01-171-0/+78
| | | | | | | | | | | | | | | | | | Implement a shortcut @{-N} for the N-th last branch checked out, that works by parsing the reflog for the message added by previous git-checkout invocations. We expand the @{-N} to the branch name, so that you end up on an attached HEAD on that branch. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'maint-1.6.0' into maintJunio C Hamano2009-01-271-1/+1
|\ \ | |/ |/| | | | | | | * maint-1.6.0: test-path-utils: Fix off by one, found by valgrind get_sha1_basic(): fix invalid memory access, found by valgrind
| * get_sha1_basic(): fix invalid memory access, found by valgrindJohannes Schindelin2009-01-271-1/+1
| | | | | | | | | | | | | | | | When get_sha1_basic() is passed a buffer of len 0, it should not check if buf[len-1] is a curly bracket. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'ar/maint-mksnpath' into HEADJunio C Hamano2008-10-261-2/+4
|\ \ | |/ | | | | | | | | | | * ar/maint-mksnpath: Fix potentially dangerous uses of mkpath and git_path Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.c Add mksnpath which allows you to specify the output buffer
| * Fix mkpath abuse in dwim_ref and dwim_log of sha1_name.cAlex Riesen2008-10-261-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Otherwise the function sometimes fail to resolve obviously correct refnames, because the string data pointed to by "str" argument were reused. The change in dwim_log does not fix anything, just optimizes away strcpy code as the path can be created directly in the available buffer. Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Make reflog query '@{1219188291}' act as '@{2008.8.19.16:24:51.-0700}'Shawn O. Pearce2008-08-211-1/+4
|/ | | | | | | | | | | | | | | | | | As we support seconds-since-epoch in $GIT_COMMITTER_TIME we should also support it in a reflog @{...} style notation. We can easily tell this part from @{nth} style notation by looking to see if the value is unreasonably large for an @{nth} style notation. The value 100000000 was chosen as it is already used by date.c to disambiguate yyyymmdd format from a seconds-since-epoch time value. A reflog with 100,000,000 record entries is also simply not valid. Such a reflog would require at least 7.7 GB to store just the old and new SHA-1 values. So our randomly chosen upper limit for @{nth} notation is "big enough". Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ignore non-existent refs in dwim_log()Junio C Hamano2008-07-231-1/+1
| | | | | | | | | | | f2eba66 (Enable HEAD@{...} and make it independent from the current branch, 2007-02-03) introduced dwim_log() to handle <refname>@{...} syntax, and as part of its processing, it checks if the ref exists by calling refsolve_ref(). It should call it as a reader to make sure the call returns NULL for a nonexistent ref (not as a potential writer in which case it does not return NULL). Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'maint-1.5.4' into maintJunio C Hamano2008-04-291-2/+5
|\ | | | | | | | | | | * maint-1.5.4: cvsimport: always pass user data to "system" as a list fix reflog approxidate parsing bug
| * fix reflog approxidate parsing bugJeff King2008-04-291-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In get_sha1_basic, we parse a string like HEAD@{10 seconds ago}:path/to/file into its constituent ref, reflog date, and path components. We never actually munge the string itself, but instead keep offsets into the string with their associated lengths. When we call approxidate on the contents inside braces, however, we pass just a string without a length. This means that approxidate could sometimes look past the closing brace and (erroneously) interpret the rest of the string as part of the date. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'maint'Junio C Hamano2008-03-151-13/+15
|\ \ | |/ | | | | | | | | | | | | * maint: Make man page building quiet when DOCBOOK_XSL_172 is defined git-new-workdir: Share SVN meta data between work dirs and the repository rev-parse: fix meaning of rev~ vs rev~0. git-svn: don't blindly append '*' to branch/tags config
| * rev-parse: fix meaning of rev~ vs rev~0.Linus Torvalds2008-03-141-13/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I think it would make more sense for rev~ to have the same guarantees that rev^ has, namely to always return a commit. I would also suggest that not giving a number would have the same effect of defaulting to 1, not 0. Right now it's a bit illogical, but at least it's an _undocumented_ illogical behaviour. This patch makes '^' and '~' act the same for the default count (i.e. both default to 1), and also have the same behaviour for a count of zero. Before (no discernible pattern): [torvalds@woody git]$ git rev-parse v1.5.1 v1.5.1^0 v1.5.1~0 v1.5.1^ v1.5.1~ 45354a57ee7e3e42c7137db6c94fa968c6babe8d 89815cab95268e8f0f58142b848ac4cd5e9cbdcb 45354a57ee7e3e42c7137db6c94fa968c6babe8d 045f5759c97746589a067461e50fad16f60711ac 45354a57ee7e3e42c7137db6c94fa968c6babe8d After (fairly logical): [torvalds@woody git]$ git rev-parse v1.5.1 v1.5.1^0 v1.5.1~0 v1.5.1^ v1.5.1~ 45354a57ee7e3e42c7137db6c94fa968c6babe8d 89815cab95268e8f0f58142b848ac4cd5e9cbdcb 89815cab95268e8f0f58142b848ac4cd5e9cbdcb 045f5759c97746589a067461e50fad16f60711ac 045f5759c97746589a067461e50fad16f60711ac Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'jc/cherry-pick' (early part)Junio C Hamano2008-03-111-22/+38
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'jc/cherry-pick' (early part): expose a helper function peel_to_type(). merge-recursive: split low-level merge functions out. Conflicts: Makefile builtin-merge-recursive.c sha1_name.c
| * | expose a helper function peel_to_type().Junio C Hamano2008-02-181-19/+38
| | | | | | | | | | | | | | | This helper function is the core of "$object^{type}" parser. Now it is made available to callers outside sha1_name.c
* | | find_unique_abbrev(): redefine semanticsJunio C Hamano2008-03-011-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function returned NULL when no object that matches the name was found, but that made the callers more complicated, as nobody used that NULL return as an indication that no object with such a name exists. They (at least the careful ones) instead took the full 40-hexdigit and used in such a case, and the careless ones segfaulted. With this "git rev-parse --short 5555555555555555555555555555555555555555" would stop segfaulting. This is based on Jeff King's rewrite to my RFC patch, but "missing" logic swapped to "exists". The final logic reads: For existing objects, make sure the abbreviated string uniquely identifies it. Otherwise, make sure the abbreviated string is long enough so that it would not name any existing object. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Avoid unnecessary "if-before-free" tests.Jim Meyering2008-02-221-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change removes all obvious useless if-before-free tests. E.g., it replaces code like this: if (some_expression) free (some_expression); with the now-equivalent: free (some_expression); It is equivalent not just because POSIX has required free(NULL) to work for a long time, but simply because it has worked for so long that no reasonable porting target fails the test. Here's some evidence from nearly 1.5 years ago: http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html FYI, the change below was prepared by running the following: git ls-files -z | xargs -0 \ perl -0x3b -pi -e \ 's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s' Note however, that it doesn't handle brace-enclosed blocks like "if (x) { free (x); }". But that's ok, since there were none like that in git sources. Beware: if you do use the above snippet, note that it can produce syntactically invalid C code. That happens when the affected "if"-statement has a matching "else". E.g., it would transform this if (x) free (x); else foo (); into this: free (x); else foo (); There were none of those here, either. If you're interested in automating detection of the useless tests, you might like the useless-if-before-free script in gnulib: [it *does* detect brace-enclosed free statements, and has a --name=S option to make it detect free-like functions with different names] http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free Addendum: Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'mk/maint-parse-careful'Junio C Hamano2008-02-181-2/+6
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * mk/maint-parse-careful: peel_onion: handle NULL check return value from parse_commit() in various functions parse_commit: don't fail, if object is NULL revision.c: handle tag->tagged == NULL reachable.c::process_tree/blob: check for NULL process_tag: handle tag->tagged == NULL check results of parse_commit in merge_bases list-objects.c::process_tree/blob: check for NULL reachable.c::add_one_tree: handle NULL from lookup_tree mark_blob/tree_uninteresting: check for NULL get_sha1_oneline: check return value of parse_object read_object_with_reference: don't read beyond the buffer
| * | peel_onion: handle NULLMartin Koegler2008-02-181-1/+4
| | | | | | | | | | | | | | | Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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