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2017-10-23Merge branch 'jk/write-in-full-fix' into maintLibravatar Junio C Hamano1-1/+1
Many codepaths did not diagnose write failures correctly when disks go full, due to their misuse of write_in_full() helper function, which have been corrected. * jk/write-in-full-fix: read_pack_header: handle signed/unsigned comparison in read result config: flip return value of store_write_*() notes-merge: use ssize_t for write_in_full() return value pkt-line: check write_in_full() errors against "< 0" convert less-trivial versions of "write_in_full() != len" avoid "write_in_full(fd, buf, len) != len" pattern get-tar-commit-id: check write_in_full() return against 0 config: avoid "write_in_full(fd, buf, len) < len" pattern
2017-10-23Merge branch 'er/fast-import-dump-refs-on-checkpoint' into maintLibravatar Junio C Hamano1-0/+142
The checkpoint command "git fast-import" did not flush updates to refs and marks unless at least one object was created since the last checkpoint, which has been corrected, as these things can happen without any new object getting created. * er/fast-import-dump-refs-on-checkpoint: fast-import: checkpoint: dump branches/tags/marks even if object_count==0
2017-10-23Merge branch 'jt/fast-export-copy-modify-fix' into maintLibravatar Junio C Hamano1-1/+19
"git fast-export" with -M/-C option issued "copy" instruction on a path that is simultaneously modified, which was incorrect. * jt/fast-export-copy-modify-fix: fast-export: do not copy from modified file
2017-10-23Merge branch 'nd/worktree-kill-parse-ref' into maintLibravatar Junio C Hamano1-0/+13
"git branch -M a b" while on a branch that is completely unrelated to either branch a or branch b misbehaved when multiple worktree was in use. This has been fixed. * nd/worktree-kill-parse-ref: branch: fix branch renaming not updating HEADs correctly
2017-10-18Merge branch 'jk/ref-filter-colors-fix' into maintLibravatar Junio C Hamano12-62/+74
This is the "theoretically more correct" approach of simply stepping back to the state before plumbing commands started paying attention to "color.ui" configuration variable. * jk/ref-filter-colors-fix: tag: respect color.ui config Revert "color: check color.ui in git_default_config()" Revert "t6006: drop "always" color config tests" Revert "color: make "always" the same as "auto" in config" color: make "always" the same as "auto" in config provide --color option for all ref-filter users t3205: use --color instead of color.branch=always t3203: drop "always" color test t6006: drop "always" color config tests t7502: use diff.noprefix for --verbose test t7508: use test_terminal for color output t3701: use test-terminal to collect color output t4015: prefer --color to -c color.diff=always test-terminal: set TERM=vt100
2017-10-18Merge branch 'rs/fsck-null-return-from-lookup' into maintLibravatar Junio C Hamano1-0/+22
Improve behaviour of "git fsck" upon finding a missing object. * rs/fsck-null-return-from-lookup: fsck: handle NULL return of lookup_blob() and lookup_tree()
2017-10-18Merge branch 'rs/qsort-s' into maintLibravatar Junio C Hamano1-1/+1
* rs/qsort-s: test-stringlist: avoid buffer underrun when sorting nothing
2017-10-18Merge branch 'mr/doc-negative-pathspec' into maintLibravatar Junio C Hamano1-1/+12
Doc updates. * mr/doc-negative-pathspec: docs: improve discoverability of exclude pathspec
2017-10-18Merge branch 'ks/test-readme-phrasofix' into maintLibravatar Junio C Hamano1-3/+3
Doc updates. * ks/test-readme-phrasofix: t/README: fix typo and grammatically improve a sentence
2017-10-18Merge branch 'jk/drop-sha1-entry-pos' into maintLibravatar Junio C Hamano2-11/+1
Code clean-up. * jk/drop-sha1-entry-pos: sha1-lookup: remove sha1_entry_pos() from header file sha1_file: drop experimental GIT_USE_LOOKUP search
2017-10-18Merge branch 'tb/ref-filter-empty-modifier' into maintLibravatar Junio C Hamano1-0/+1
In the "--format=..." option of the "git for-each-ref" command (and its friends, i.e. the listing mode of "git branch/tag"), "%(atom:)" (e.g. "%(refname:)", "%(body:)" used to error out. Instead, treat them as if the colon and an empty string that follows it were not there. * tb/ref-filter-empty-modifier: ref-filter.c: pass empty-string as NULL to atom parsers
2017-10-18Merge branch 'ar/request-pull-phrasofix' into maintLibravatar Junio C Hamano1-2/+2
Spell the name of our system as "Git" in the output from request-pull script. * ar/request-pull-phrasofix: request-pull: capitalise "Git" to make it a proper noun
2017-10-18Merge branch 'jk/diff-blob' into maintLibravatar Junio C Hamano1-0/+5
"git cat-file --textconv" started segfaulting recently, which has been corrected. * jk/diff-blob: cat-file: handle NULL object_context.path
2017-10-18Merge branch 'jk/describe-omit-some-refs' into maintLibravatar Junio C Hamano1-1/+5
"git describe --match" learned to take multiple patterns in v2.13 series, but the feature ignored the patterns after the first one and did not work at all. This has been fixed. * jk/describe-omit-some-refs: describe: fix matching to actually match all patterns
2017-10-18Merge branch 'tb/test-lint-echo-e' into maintLibravatar Junio C Hamano1-1/+1
The test linter has been taught that we do not like "echo -e". * tb/test-lint-echo-e: test-lint: echo -e (or -E) is not portable
2017-10-18Merge branch 'rs/archive-excluded-directory' into maintLibravatar Junio C Hamano3-4/+4
"git archive", especially when used with pathspec, stored an empty directory in its output, even though Git itself never does so. This has been fixed. * rs/archive-excluded-directory: archive: don't add empty directories to archives
2017-10-18Merge branch 'mh/packed-ref-store-prep' into maintLibravatar Junio C Hamano1-2/+16
Fix regression to "gitk --bisect" by a recent update. * mh/packed-ref-store-prep: rev-parse: don't trim bisect refnames
2017-10-18Merge branch 'mm/send-email-cc-cruft' into maintLibravatar Junio C Hamano1-0/+4
In addition to "cc: <a@dd.re.ss> # cruft", "cc: a@dd.re.ss # cruft" was taught to "git send-email" as a valid way to tell it that it needs to also send a carbon copy to <a@dd.re.ss> in the trailer section. * mm/send-email-cc-cruft: send-email: don't use Mail::Address, even if available send-email: fix garbage removal after address
2017-10-17tag: respect color.ui configLibravatar Jeff King2-0/+11
Since 11b087adfd (ref-filter: consult want_color() before emitting colors, 2017-07-13), we expect that setting "color.ui" to "always" will enable color tag formats even without a tty. As that commit was built on top of 136c8c8b8f (color: check color.ui in git_default_config(), 2017-07-13) from the same series, we didn't need to touch tag's config parsing at all. However, since we reverted 136c8c8b8f, we now need to explicitly call git_color_default_config() to make this work. Let's do so, and also restore the test dropped in 0c88bf5050 (provide --color option for all ref-filter users, 2017-10-03). That commit swapped out our "color.ui=always" test for "--color" in preparation for "always" going away. But since it is here to stay, we should test both cases. Note that for-each-ref also lost its color.ui support as part of reverting 136c8c8b8f. But as a plumbing command, it should _not_ respect the color.ui config. Since it also gained a --color option in 0c88bf5050, that's the correct way to ask it for color. We'll continue to test that, and confirm that "color.ui" is not respected. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-17Revert "color: check color.ui in git_default_config()"Libravatar Jeff King1-1/+1
This reverts commit 136c8c8b8fa39f1315713248473dececf20f8fe7. That commit was trying to address a bug caused by 4c7f1819b3 (make color.ui default to 'auto', 2013-06-10), in which plumbing like diff-tree defaulted to "auto" color, but did not respect a "color.ui" directive to disable it. But it also meant that we started respecting "color.ui" set to "always". This was a known problem, but 4c7f1819b3 argued that nobody ought to be doing that. However, that turned out to be wrong, and we got a number of bug reports related to "add -p" regressing in v2.14.2. Let's revert 136c8c8b8, fixing the regression to "add -p". This leaves the problem from 4c7f1819b3 unfixed, but: 1. It's a pretty obscure problem in the first place. I only noticed it while working on the color code, and we haven't got a single bug report or complaint about it. 2. We can make a more moderate fix on top by respecting "never" but not "always" for plumbing commands. This is just the minimal fix to go back to the working state we had before v2.14.2. Note that this isn't a pure revert. We now have a test in t3701 which shows off the "add -p" regression. This can be flipped to success. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-17Revert "t6006: drop "always" color config tests"Libravatar Jeff King1-5/+15
This reverts commit c5bdfe677cfab5b2e87771c35565d44d3198efda. That commit was done primarily to prepare for the weakening of "always" in 6be4595edb (color: make "always" the same as "auto" in config, 2017-10-03). But since we've now reverted 6be4595edb, there's no need for us to remove "-c color.ui=always" from the tests. And in fact it's a good idea to restore these tests, to make sure that "always" continues to work. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-17Revert "color: make "always" the same as "auto" in config"Libravatar Jeff King1-1/+1
This reverts commit 6be4595edb8e5b616c6e8b9fbc78b0f831fa2a87. That commit weakened the "always" setting of color config so that it acted as "auto". This was meant to solve regressions in v2.14.2 in which setting "color.ui=always" in the on-disk config broke scripts like add--interactive, because the plumbing diff commands began to generate color output. This was due to 136c8c8b8f (color: check color.ui in git_default_config(), 2017-07-13), which was in turn trying to fix issues caused by 4c7f1819b3 (make color.ui default to 'auto', 2013-06-10). But in weakening "always", we created even more problems, as people expect to be able to use "git -c color.ui=always" to force color (especially because some commands don't have their own --color flag). We can fix that by special-casing the command-line "-c", but now things are getting pretty confusing. Instead of piling hacks upon hacks, let's start peeling off the hacks. The first step is dropping the weakening of "always", which this revert does. Note that we could actually revert the whole series merged in by da15b78e52642bd45fd5513ab0000fdf2e58a6f4. Most of that series consists of preparations to the tests to handle the weakening of "-c color.ui=always". But it's worth keeping for a few reasons: - there are some other preparatory cleanups, like e433749d86 (test-terminal: set TERM=vt100, 2017-10-03) - it adds "--color" options more consistently in 0c88bf5050 (provide --color option for all ref-filter users, 2017-10-03) - some of the cases dropping "-c" end up being more robust and realistic tests, as in 01c94e9001 (t7508: use test_terminal for color output, 2017-10-03) - the preferred tool for overriding config is "--color", and we should be modeling that consistently We can individually revert the few commits necessary to restore some useful tests (which will be done on top of this patch). Note that this isn't a pure revert; we'll keep the test added in t3701, but mark it as failure for now. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-17Merge branch 'jk/ui-color-always-to-auto-maint' (early part) into ↵Libravatar Junio C Hamano12-79/+70
jk/ref-filter-colors-fix-maint * 'jk/ui-color-always-to-auto-maint' (early part): color: make "always" the same as "auto" in config provide --color option for all ref-filter users t3205: use --color instead of color.branch=always t3203: drop "always" color test t6006: drop "always" color config tests t7502: use diff.noprefix for --verbose test t7508: use test_terminal for color output t3701: use test-terminal to collect color output t4015: prefer --color to -c color.diff=always test-terminal: set TERM=vt100
2017-10-06fsck: handle NULL return of lookup_blob() and lookup_tree()Libravatar René Scharfe1-0/+22
lookup_blob() and lookup_tree() can return NULL if they find an object of an unexpected type. Accessing the object member is undefined in that case. Cast the result to a struct object pointer instead; we can do that because object is the first member of all object types. This trick is already used in other places in the code. An error message is already shown by object_as_type(), which is called by the lookup functions. The walk callback functions are expected to handle NULL object pointers passed to them, but put_object_name() needs a valid object, so avoid calling it without one. Suggested-by: SZEDER Gábor <szeder.dev@gmail.com> Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-05ref-filter.c: pass empty-string as NULL to atom parsersLibravatar Taylor Blau1-0/+1
Peff points out that different atom parsers handle the empty "sub-argument" list differently. An example of this is the format "%(refname:)". Since callers often use `string_list_split` (which splits the empty string with any delimiter as a 1-ary string_list containing the empty string), this makes handling empty sub-argument strings non-ergonomic. Let's fix this by declaring that atom parser implementations must not care about distinguishing between the empty string "%(refname:)" and no sub-arguments "%(refname)". Current code aborts, either with "unrecognised arg" (e.g. "refname:") or "does not take args" (e.g. "body:") as an error message. Signed-off-by: Taylor Blau <me@ttaylorr.com> Reviewed-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04test-stringlist: avoid buffer underrun when sorting nothingLibravatar René Scharfe1-1/+1
Check if the strbuf containing data to sort is empty before attempting to trim a trailing newline character. Signed-off-by: Rene Scharfe <l.s.r@web.de> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04color: make "always" the same as "auto" in configLibravatar Jeff King1-0/+10
It can be handy to use `--color=always` (or it's synonym `--color`) on the command-line to convince a command to produce color even if it's stdout isn't going to the terminal or a pager. What's less clear is whether it makes sense to set config variables like color.ui to `always`. For a one-shot like: git -c color.ui=always ... it's potentially useful (especially if the command doesn't directly support the `--color` option). But setting `always` in your on-disk config is much muddier, as you may be surprised when piped commands generate colors (and send them to whatever is consuming the pipe downstream). Some people have done this anyway, because: 1. The documentation for color.ui makes it sound like using `always` is a good idea, when you almost certainly want `auto`. 2. Traditionally not every command (and especially not plumbing) respected color.ui in the first place. So the confusion came up less frequently than it might have. The situation changed in 136c8c8b8f (color: check color.ui in git_default_config(), 2017-07-13), which negated point (2): now scripts using only plumbing commands (like add-interactive) are broken by this setting. That commit was fixing real issues (e.g., by making `color.ui=never` work, since `auto` is the default), so we don't want to just revert it. We could turn `always` into a noop in plumbing commands, but that creates a hard-to-explain inconsistency between the plumbing and other commands. Instead, let's just turn `always` into `auto` for all config. This does break the "one-shot" config shown above, but again, we're probably better to have simple and consistent rules than to try to special-case command-line config. There is one place where `always` should retain its meaning: on the command line, `--color=always` should continue to be the same as `--color`, overriding any isatty checks. Since the command-line parser also depends on git_config_colorbool(), we can use the existence of the "var" string to deterine whether we are serving the command-line or the config. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04provide --color option for all ref-filter usersLibravatar Jeff King2-4/+4
When ref-filter learned about want_color() in 11b087adfd (ref-filter: consult want_color() before emitting colors, 2017-07-13), it became useful to be able to turn colors off and on for specific commands. For git-branch, you can do so with --color/--no-color. But for git-for-each-ref and git-tag, the other users of ref-filter, you have no option except to tweak the "color.ui" config setting. Let's give both of these commands the usual color command-line options. This is a bit more obvious as a method for overriding the config. And it also prepares us for the behavior of "always" changing (so that we are still left with a way of forcing color when our output goes to a non-terminal). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04t3205: use --color instead of color.branch=alwaysLibravatar Jeff King1-3/+2
To test the color output, we must convince "git branch" to write colors to a non-terminal. We do that now by setting the color config to "always". In preparation for the behavior of "always" changing, let's switch to using the "--color" command-line option, which is more direct. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04t3203: drop "always" color testLibravatar Jeff King1-6/+0
In preparation for the behavior of "always" changing to match "auto", we can simply drop this test. We already check other forms (like "--color") independently. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04t6006: drop "always" color config testsLibravatar Jeff King1-15/+5
We test the %C() format placeholders with a variety of color-inducing options, including "--color" and "-c color.ui=always". In preparation for the behavior of "always" changing, we need to do something with those "always" tests. We can drop ones that expect "always" to turn on color even to a file, as that will become a synonym for "auto", which is already tested. For the "--no-color" test, we need to make sure that color would otherwise be shown. To do this, we can use test_terminal, which enables colors in the default setup. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04t7502: use diff.noprefix for --verbose testLibravatar Jeff King1-2/+2
To check that "status -v" respects diff config, we set "color.diff" and look at the output of "status". We could equally well use any diff config. Since color output depends on a lot of other factors (like whether stdout is a tty, and how we interpret "always"), let's use a more mundane option. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04t7508: use test_terminal for color outputLibravatar Jeff King1-20/+21
This script tests the output of status with various formats when color is enabled. It uses the "always" setting so that the output is valid even though we capture it in a file. Using test_terminal gives us a more realistic environment, and prepares us for the behavior of "always" changing. Arguably we are testing less than before, since "auto" is already the default, and we can no longer tell if the config is actually doing anything. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04t3701: use test-terminal to collect color outputLibravatar Jeff King1-5/+3
When testing whether "add -p" can generate colors, we set color.ui to "always". This isn't a very good test, as in the real-world a user typically has "auto" coupled with stdout going to a terminal (and it's plausible that this could mask a real bug in add--interactive if we depend on plumbing's isatty check). Let's switch to test_terminal, which gives us a more realistic environment. This also prepare us for future changes to the "always" color option. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04t4015: prefer --color to -c color.diff=alwaysLibravatar Jeff King1-14/+14
t4015 contains many color-related tests which need to override the "is stdout a tty" check. They do so by setting the color.diff config, but we can accomplish the same with the --color option. Besides being shorter to type, switching will prepare us for upcoming changes to "always" when see it in config. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-04test-terminal: set TERM=vt100Libravatar Jeff King7-10/+9
The point of the test-terminal script is to simulate in the test scripts an environment where output is going to a real terminal. But since test-lib.sh also sets TERM=dumb, the simulation isn't very realistic. The color code will skip auto-coloring for TERM=dumb, leading to us liberally sprinkling test_terminal env TERM=vt100 git ... through the test suite to convince the tests to actually generate colors. Let's set TERM for programs run under test_terminal, which is one less thing for test-writers to remember. In most cases the callers can be simplified, but note there is one interesting case in t4202. It uses test_terminal to check the auto-enabling of --decorate, but the expected output _doesn't_ contain colors (because TERM=dumb suppresses them). Using TERM=vt100 is closer to what the real world looks like; adjust the expected output to match. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-03request-pull: capitalise "Git" to make it a proper nounLibravatar Ann T Ropea1-2/+2
Of the many ways to spell the three-letter word, the variant "Git" should be used when referring to a repository in a description; or, in general, when it is used as a proper noun. We thus change the pull-request template message so that it reads "...in the Git repository at:" Besides, this brings us in line with the documentation, see Documentation/howto/using-signed-tag-in-pull-request.txt Signed-off-by: Ann T Ropea <bedhanger@gmx.de> Acked-by: Jonathan Nieder <jrnieder@gmail.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-29fast-import: checkpoint: dump branches/tags/marks even if object_count==0Libravatar Eric Rannaud1-0/+142
The checkpoint command cycles packfiles if object_count != 0, a sensible test or there would be no pack files to write. Since 820b931012, the command also dumps branches, tags and marks, but still conditionally. However, it is possible for a command stream to modify refs or create marks without creating any new objects. For example, reset a branch (and keep fast-import running): $ git fast-import reset refs/heads/master from refs/heads/master^ checkpoint but refs/heads/master remains unchanged. Other example: a commit command that re-creates an object that already exists in the object database. The man page also states that checkpoint "updates the refs" and that "placing a progress command immediately after a checkpoint will inform the reader when the checkpoint has been completed and it can safely access the refs that fast-import updated". This wasn't always true without this patch. This fix unconditionally calls dump_{branches,tags,marks}() for all checkpoint commands. dump_branches() and dump_tags() are cheap to call in the case of a no-op. Add tests to t9300 that observe the (non-packfiles) effects of checkpoint. Signed-off-by: Eric Rannaud <e@nanocritical.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-25docs: improve discoverability of exclude pathspecLibravatar Manav Rathi1-1/+12
The ability to exclude paths with a negative pathspec is not mentioned in the man pages for git grep and other commands where it might be useful. Add an example and a pointer to the pathspec glossary entry in the man page for git grep to help the user to discover this ability. Add similar pointers from the git-add and git-status man pages. Additionally, - Add a test for the behaviour when multiple exclusions are present. - Add a test for the ^ alias. - Improve name of existing test. - Improve grammar in glossary description of the exclude pathspec. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Manav Rathi <mnvrth@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-22Sync with 2.13.6Libravatar Junio C Hamano1-0/+48
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-22Sync with 2.12.5Libravatar Junio C Hamano1-0/+48
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-22Sync with 2.11.4Libravatar Junio C Hamano1-0/+48
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-22Sync with 2.10.5Libravatar Junio C Hamano1-0/+48
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-22Merge branch 'jk/git-shell-drop-cvsserver' into maint-2.10Libravatar Junio C Hamano1-0/+48
2017-09-22cat-file: handle NULL object_context.pathLibravatar Jeff King1-0/+5
Commit dc944b65f1 (get_sha1_with_context: dynamically allocate oc->path, 2017-05-19) changed the rules that callers must follow for seeing if we parsed a path in the object name. The rules switched from "check if the oc.path buffer is empty" to "check if the oc.path pointer is NULL". But that commit forgot to update some sites in cat_one_file(), meaning we might dereference a NULL pointer. You can see this by making a path-aware request like --textconv without specifying --path, and giving an object name that doesn't have a path in it. Like: git cat-file --textconv HEAD which will reliably segfault. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-21fast-export: do not copy from modified fileLibravatar Jonathan Tan1-1/+19
When run with the "-C" option, fast-export writes 'C' commands in its output whenever the internal diff mechanism detects a file copy, indicating that fast-import should copy the given existing file to the given new filename. However, the diff mechanism works against the prior version of the file, whereas fast-import uses whatever is current. This causes issues when a commit both modifies a file and uses it as the source for a copy. Therefore, teach fast-export to refrain from writing 'C' when it has already written a modification command for a file. An existing test in t9350-fast-export is also fixed in this patch. The existing line "C file6 file7" copies the wrong version of file6, but it has coincidentally worked because file7 was subsequently overridden. Reported-by: Juraj Oršulić <juraj.orsulic@fer.hr> Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-21test-lint: echo -e (or -E) is not portableLibravatar Torsten Bögershausen1-1/+1
Some implementations of `echo` support the '-e' option to enable backslash interpretation of the following string. As an addition, they support '-E' to turn it off. However, none of these are portable, POSIX doesn't even mention them, and many implementations don't support them. A check for '-n' is already done in check-non-portable-shell.pl, extend it to cover '-n', '-e' or '-E'. Signed-off-by: Torsten Bögershausen <tboegi@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-19t/README: fix typo and grammatically improve a sentenceLibravatar Kaartic Sivaraam1-3/+3
Signed-off-by: Kaartic Sivaraam <kaarticsivaraam91196@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-17describe: fix matching to actually match all patternsLibravatar Max Kirillov1-1/+5
`git describe --match` with multiple patterns matches only first pattern. If it fails, next patterns are not tried. Fix it, add test cases and update existing test which has wrong expectation. Signed-off-by: Max Kirillov <max@max630.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-09-14avoid "write_in_full(fd, buf, len) != len" patternLibravatar Jeff King1-1/+1
The return value of write_in_full() is either "-1", or the requested number of bytes[1]. If we make a partial write before seeing an error, we still return -1, not a partial value. This goes back to f6aa66cb95 (write_in_full: really write in full or return error on disk full., 2007-01-11). So checking anything except "was the return value negative" is pointless. And there are a couple of reasons not to do so: 1. It can do a funny signed/unsigned comparison. If your "len" is signed (e.g., a size_t) then the compiler will promote the "-1" to its unsigned variant. This works out for "!= len" (unless you really were trying to write the maximum size_t bytes), but is a bug if you check "< len" (an example of which was fixed recently in config.c). We should avoid promoting the mental model that you need to check the length at all, so that new sites are not tempted to copy us. 2. Checking for a negative value is shorter to type, especially when the length is an expression. 3. Linus says so. In d34cf19b89 (Clean up write_in_full() users, 2007-01-11), right after the write_in_full() semantics were changed, he wrote: I really wish every "write_in_full()" user would just check against "<0" now, but this fixes the nasty and stupid ones. Appeals to authority aside, this makes it clear that writing it this way does not have an intentional benefit. It's a historical curiosity that we never bothered to clean up (and which was undoubtedly cargo-culted into new sites). So let's convert these obviously-correct cases (this includes write_str_in_full(), which is just a wrapper for write_in_full()). [1] A careful reader may notice there is one way that write_in_full() can return a different value. If we ask write() to write N bytes and get a return value that is _larger_ than N, we could return a larger total. But besides the fact that this would imply a totally broken version of write(), it would already invoke undefined behavior. Our internal remaining counter is an unsigned size_t, which means that subtracting too many byte will wrap it around to a very large number. So we'll instantly begin reading off the end of the buffer, trying to write gigabytes (or petabytes) of data. Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>