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2017-03-21Sixth batch for 2.13Junio C Hamano1-17/+23
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-21Prepare for 2.12.2Junio C Hamano2-1/+62
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-20Git 2.12.1v2.12.1Junio C Hamano1-1/+2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-20push: mention "push.default=tracking" in the documentationÆvar Arnfjörð Bjarmason1-0/+2
Change the documentation for push.tracking=* to re-include a mention of what "tracking" does. The "tracking" option was renamed to "upstream" back in 53c4031 ("push.default: Rename 'tracking' to 'upstream'", 2011-02-16), this section was then subsequently rewritten in 87a70e4 ("config doc: rewrite push.default section", 2013-06-19) to remove any mention of "tracking". Maybe we should just warn or die nowadays if this option is in the config, but I had some old config of mine use this option, I'd forgotten that it was a synonym, and nothing in git's documentation mentioned that. That's bad, either we shouldn't support it at all, or we should document what it does. This patch does the latter. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-20git-commit.txt: list post-rewrite in HOOKS sectionNguyễn Thái Ngọc Duy1-1/+1
The hook was added in a86ed83cce (Merge branch 'tr/notes-display' - 2010-03-24), which updated githooks.txt but not git-commit.txt. git-commit.txt was later updated in e858af6d50 (commit: document a couple of options - 2012-06-08). Since this commit focused on command line options, this section was probably forgotten. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-20doc: change erroneous --[no]-whatever into --[no-]whateverÆvar Arnfjörð Bjarmason2-2/+2
Change these two obvious typos to be in line with the rest of the documentation, which uses the correct --[no-]whatever form. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-17Fifth batch for 2.13Junio C Hamano1-9/+54
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-17credential-cache: add tests for XDG functionalityDevin Lehmacher1-0/+93
Signed-off-by: Devin Lehmacher <lehmacdj@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-17credential-cache: use XDG_CACHE_HOME for socketDevin Lehmacher2-5/+21
Make git-credential-cache follow the XDG base path specification by default. This increases consistency with other applications and helps keep clutter out of users' home directories. Check the old socket location, ~/.git-credential-cache/, and use ~/.git-credential-cache/socket if that directory exists rather than forcing users who have used `git credential-cache` before to migrate to the new XDG compliant location. Otherwise use the socket $XDG_CACHE_HOME/git/credential/socket following XDG base path specification. Use the subdirectory credential/ in case other files are cached under $XDG_CACHE_HOME/git/ in the future and to make the socket's purpose clear. Signed-off-by: Devin Lehmacher <lehmacdj@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-17wt-status: simplify by using for_each_string_list_itemStefan Beller1-15/+5
Improve readability by using the for_each_string_list_item helper instead of manually iterating with an integer counter. Signed-off-by: Stefan Beller <sbeller@google.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-17sequencer: drop "warning:" when stopping for editJeff King1-1/+2
Since the conversion from shell to C in 56dc3ab04 (sequencer (rebase -i): implement the 'edit' command, 2017-01-02), stopping at an "edit" instruction went from: $ git rebase -i Stopped at 6ce6b914a... odb_pack_keep(): stop generating keepfile name You can amend the commit now, with [...more instructions...] to: $ git rebase -i warning: stopped at 6ce6b914a... odb_pack_keep(): stop generating keepfile name You can amend the commit now, with [...more instructions...] The "warning" implies that it's something unexpected, but it's not. Let's switch back to the original message. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-16Preparing for 2.12.1Junio C Hamano3-2/+43
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-16index-pack: make pointer-alias fallbacks saferJeff King1-8/+12
The final() function accepts a NULL value for certain parameters, and falls back to writing into a reusable "name" buffer, and then either: 1. For "keep_name", requiring all uses to do "keep_name ? keep_name : name.buf". This is awkward, and it's easy to accidentally look at the maybe-NULL keep_name. 2. For "final_index_name" and "final_pack_name", aliasing those pointers to the "name" buffer. This is easier to use, but the aliased pointers become invalid after the buffer is reused (this isn't a bug now, but it's a potential pitfall). One way to make this safer would be to introduce an extra pointer to do the aliasing, and have its lifetime match the validity of the "name" buffer. But it's still easy to accidentally use the wrong name (i.e., to use "final_pack_name" instead of the aliased pointer). Instead, let's use three separate buffers that will remain valid through the function. That makes it safe to alias the pointers and use them consistently. The extra allocations shouldn't matter, as this function is not performance sensitive. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-16replace snprintf with odb_pack_name()Jeff King2-31/+24
In several places we write the name of the pack filename into a fixed-size buffer using snprintf(), but do not check the return value. As a result, a very long object directory could cause us to quietly truncate the pack filename (potentially leading to a corrupted repository, as a newly written packfile could be missing its .pack extension). We can use odb_pack_name() to do this with a strbuf (and shorten the code, as well). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-16odb_pack_keep(): stop generating keepfile nameJeff King4-12/+12
The odb_pack_keep() function generates the name of a .keep file and opens it. This has two problems: 1. It requires a fixed-size buffer to create the filename and doesn't notice when the result is truncated. 2. Of the two callers, one sometimes wants to open a filename it already has, which makes things awkward (it has to do so manually, and skips the leading-directory creation). Instead, let's have odb_pack_keep() just open the file. Generating the name isn't hard, and a future patch will switch callers over to odb_pack_name() anyway. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-16sha1_file.c: make pack-name helper globally accessibleJeff King2-11/+15
We provide sha1_pack_name() and sha1_pack_index_name(), but the more generic form (which takes its own strbuf and an arbitrary extension) is only used to implement the other two. Let's make it available, but clean up a few things: 1. Name it odb_pack_name(), as the original sha1_get_pack_name() is long but not all that descriptive. 2. Switch the strbuf argument to the beginning, so that it matches similar path-building functions like git_path_buf(). 3. Clean up the out-dated docstring and move it to the public declaration. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-16move odb_* declarations out of git-compat-util.hJeff King2-2/+12
These functions were originally conceived as wrapper functions similar to xmkstemp(). They were later moved by 463db9b10 (wrapper: move odb_* to environment.c, 2010-11-06). The more appropriate place for a declaration is in cache.h. While we're at it, let's add some basic docstrings. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15rev-parse: simplify parsing of ref optionsJeff King1-29/+16
All of these options do the same thing "--foo" iterates over the "foo" refs, and "--foo=<glob>" does the same with a glob. We can factor this into its own function to avoid repeating ourselves. There are two subtleties to note: - the original called for_each_branch_ref(), etc, in the non-glob case. Now we will call for_each_ref_in("refs/heads/") which is exactly what for_each_branch_ref() did under the hood. - for --glob, we'll call for_each_glob_ref_in() with a NULL "prefix" argument. Which is exactly what for_each_glob_ref() was doing already. So both cases should behave identically, and it seems reasonable to assume that this will remain the same. The functions we are calling now are the more-generic ones, and the ones we are dropping are just convenience wrappers. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15rev-parse: add helper for parsing "--foo/--foo="Jeff King1-10/+28
We can't just use a bare skip_prefix() for these cases, because we need to match both the "--foo" form and the "--foo=<value>" form (and tell the difference between the two in the caller). We can wrap this in a simple helper which has two obvious callsites, and will gain some more in the next patch. Note that the error output for abbrev-ref changes slightly, as we don't keep our original "arg" pointer. However, the new output should hopefully be more clear: [before] fatal: unknown mode for --abbrev-ref=foo [after] fatal: unknown mode for --abbrev-ref: foo Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15rev-parse: use skip_prefix when parsing optionsJeff King1-20/+20
Using skip_prefix lets us avoid manually-counted offsets into the argument string. This patch converts the simple and obvious cases. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15git-prompt: add a describe style for any tagsMichael J Gruber1-0/+3
git-prompt has various describe styles, among them "describe" (by annotated tags) and "default" (by exact match with any tag). Add a mode "tag" that describes by any tag, annotated or not. Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15cherry-pick: detect bogus arguments to --mainlineJeff King2-1/+29
The cherry-pick and revert commands use OPT_INTEGER() to parse --mainline. The stock parser is smart enough to reject non-numeric nonsense, but it doesn't know that parent counting starts at 1. Worse, the value "0" is indistinguishable from the unset case, so a user who assumes the counting is 0-based will get a confusing message: $ git cherry-pick -m 0 $merge error: commit ... is a merge but no -m option was given. Let's use a custom callback that enforces our range. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15difftool: handle modified symlinks in dir-diff modeDavid Aguilar2-5/+106
Detect the null object ID for symlinks in dir-diff so that difftool can detect when symlinks are modified in the worktree. Previously, a null symlink object ID would crash difftool. Handle null object IDs as unknown content that must be read from the worktree. Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15t7800: cleanup cruft left behind by testsDavid Aguilar1-1/+4
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15t7800: remove whitespace before redirectDavid Aguilar1-1/+1
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15submodule-config: correct error reporting for invalid ignore valueStefan Beller1-1/+1
As 'var' contains the whole value we get error messages that repeat the section and key currently: warning: Invalid parameter 'true' for config option 'submodule.submodule.plugins/hooks.ignore.ignore' Fix this by only giving the section name in the warning. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-15hash.h: move SHA-1 implementation selection into a header filebrian m. carlson3-8/+20
Many developers use functionality in their editors that allows for quick syntax checks, including warning about questionable constructs. This functionality allows rapid development with fewer errors. However, such functionality generally does not allow the specification of project-specific defines or command-line options. Since the SHA1_HEADER include is not defined in such a case, developers see spurious errors when using these tools. Furthermore, there are known implementations of "cc" whose '#include' is unhappy with this construct. Instead of using SHA1_HEADER, create a hash.h header and use #if and #elif to select the desired header. Have the Makefile pass an appropriate option to help the header select the right implementation to use. [jc: make BLK_SHA1 the fallback default as discussed on list, e.g. <20170314201424.vccij5z2ortq4a4o@sigill.intra.peff.net>; also remove SHA1_HEADER and SHA1_HEADER_SQ that are no longer used]. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14Fourth batch after 2.12Junio C Hamano1-0/+42
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14setup.c: mention unresolved problemsJohannes Schindelin1-0/+2
During the review of the `early-config` patch series, two issues have been identified that have been with us forever. Mark the identified problems for later so that we do not forget them. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14t1309: document cases where we would want early config not to die()Johannes Schindelin1-0/+24
Jeff King came up with a couple examples that demonstrate how the new read_early_config() that looks harder for the current .git/ directory could die() in an undesirable way. Let's add those cases to the test script, to document what we would like to happen when early config encounters problems. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14setup_git_directory_gently_1(): avoid die()ingJohannes Schindelin1-8/+17
This function now has a new caller in addition to setup_git_directory(): the newly introduced discover_git_directory(). That function wants to discover the current .git/ directory, and in case of a corrupted one simply pretend that there is none to be found. Example: if a stale .git file exists in the parent directory, and the user calls `git -p init`, we want Git to simply *not* read any repository config for the pager (instead of aborting with a message that the .git file is corrupt). Let's actually pretend that there was no GIT_DIR to be found in that case when being called from discover_git_directory(), but keep the previous behavior (i.e. to die()) for the setup_git_directory() case. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14t1309: test read_early_config()Johannes Schindelin2-0/+65
So far, we had no explicit tests of that function. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14read_early_config(): really discover .git/Johannes Schindelin2-23/+16
Earlier, we punted and simply assumed that we are in the top-level directory of the project, and that there is no .git file but a .git/ directory so that we can read directly from .git/config. However, that is not necessarily true. We may be in a subdirectory. Or .git may be a gitfile. Or the environment variable GIT_DIR may be set. To remedy this situation, we just refactored the way setup_git_directory() discovers the .git/ directory, to make it reusable, and more importantly, to leave all global variables and the current working directory alone. Let's discover the .git/ directory correctly in read_early_config() by using that new function. This fixes 4 known breakages in t7006. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14read_early_config(): avoid .git/config hack when unneededJohannes Schindelin1-2/+3
So far, we only look whether the startup_info claims to have seen a git_dir. However, do_git_config_sequence() (and consequently the git_config_with_options() call used by read_early_config() asks the have_git_dir() function whether we have a .git/ directory, which in turn also looks at git_dir and at the environment variable GIT_DIR. And when this is the case, the repository config is handled already, so we do not have to do that again explicitly. Let's just use the same function, have_git_dir(), to determine whether we have to handle .git/config explicitly. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14setup: make read_early_config() reusableJohannes Schindelin3-31/+32
The pager configuration needs to be read early, possibly before discovering any .git/ directory. Let's not hide this function in pager.c, but make it available to other callers. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14setup: introduce the discover_git_directory() functionJohannes Schindelin2-0/+50
We modified the setup_git_directory_gently_1() function earlier to make it possible to discover the GIT_DIR without changing global state. However, it is still a bit cumbersome to use if you only need to figure out the (possibly absolute) path of the .git/ directory. Let's just provide a convenient wrapper function with an easier signature that *just* discovers the .git/ directory. We will use it in a subsequent patch to fix the early config. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14setup_git_directory_1(): avoid changing global stateJohannes Schindelin1-75/+118
For historical reasons, Git searches for the .git/ directory (or the .git file) by changing the working directory successively to the parent directory of the current directory, until either anything was found or until a ceiling or a mount point is hit. Further global state may be changed in case a .git/ directory was found. We do have a use case, though, where we would like to find the .git/ directory without having any global state touched, though: when we read the early config e.g. for the pager or for alias expansion. Let's just move all of code that changes any global state out of the function `setup_git_directory_gently_1()` into `setup_git_directory_gently()`. In subsequent patches, we will use the _1() function in a new `discover_git_directory()` function that we will then use for the early config code. Note: the new loop is a *little* tricky, as we have to handle the root directory specially: we cannot simply strip away the last component including the slash, as the root directory only has that slash. To remedy that, we introduce the `min_offset` variable that holds the minimal length of an absolute path, and using that to special-case the root directory, including an early exit before trying to find the parent of the root directory. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14setup: prepare setup_discovered_git_dir() for the root directoryJohannes Schindelin1-2/+4
Currently, the offset parameter (indicating what part of the cwd parameter corresponds to the current directory after discovering the .git/ directory) is set to 0 when we are running in the root directory. However, in the next patches we will avoid changing the current working directory while searching for the .git/ directory, meaning that the offset corresponding to the root directory will have to be 1 to reflect that this directory is characterized by the path "/" (and not ""). So let's make sure that setup_discovered_git_directory() only tries to append the trailing slash to non-root directories. Note: the setup_bare_git_directory() does not need a corresponding change, as it does not want to return a prefix. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14add--interactive: do not expand pathspecs with ls-filesJeff King2-11/+45
When we want to get the list of modified files, we first expand any user-provided pathspecs with "ls-files", and then feed the resulting list of paths as arguments to "diff-index" and "diff-files". If your pathspec expands into a large number of paths, you may run into one of two problems: 1. The OS may complain about the size of the argument list, and refuse to run. For example: $ (ulimit -s 128 && git add -p drivers) Can't exec "git": Argument list too long at .../git-add--interactive line 177. Died at .../git-add--interactive line 177. That's on the linux.git repository, which has about 20K files in the "drivers" directory (none of them modified in this case). The "ulimit -s" trick is necessary to show the problem on Linux even for such a gigantic set of paths. Other operating systems have much smaller limits (e.g., a real-world case was seen with only 5K files on OS X). 2. Even when it does work, it's really slow. The pathspec code is not optimized for huge numbers of paths. Here's the same case without the ulimit: $ time git add -p drivers No changes. real 0m16.559s user 0m53.140s sys 0m0.220s We can improve this by skipping "ls-files" completely, and just feeding the original pathspecs to the diff commands. This solution was discussed in 2010: http://public-inbox.org/git/20100105041438.GB12574@coredump.intra.peff.net/ but at the time the diff code's pathspecs were more primitive than those used by ls-files (e.g., they did not support globs). Making the change would have caused a user-visible regression, so we didn't. Since then, the pathspec code has been unified, and the diff commands natively understand pathspecs like '*.c'. This patch implements that solution. That skips the argument-list limits, and the result runs much faster: $ time git add -p drivers No changes. real 0m0.149s user 0m0.116s sys 0m0.080s There are two new tests. The first just exercises the globbing behavior to confirm that we are not causing a regression there. The second checks the actual argument behavior using GIT_TRACE. We _could_ do it with the "ulimit -s" trick, as above. But that would mean the test could only run where "ulimit -s" works. And tests of that sort are expensive, because we have to come up with enough files to actually bust the limit (we can't just shrink the "128" down infinitely, since it is also the in-program stack size). Finally, two caveats and possibilities for future work: a. This fixes one argument-list expansion, but there may be others. In fact, it's very likely that if you run "git add -i" and select a large number of modified files that the script would try to feed them all to a single git command. In practice this is probably fine. The real issue here is that the argument list was growing with the _total_ number of files, not the number of modified or selected files. b. If the repository contains filenames with literal wildcard characters (e.g., "foo*"), the original code expanded them via "ls-files" and then fed those wildcard names to "diff-index", which would have treated them as wildcards. This was a bug, which is now fixed (though unless you really go through some contortions with ":(literal)", it's likely that your original pathspec would match whatever the accidentally-expanded wildcard would anyway). So this takes us one step closer to working correctly with files whose names contain wildcard characters, but it's likely that others remain (e.g., if "git add -i" feeds the selected paths to "git add"). Reported-by: Wincent Colaiuta <win@wincent.com> Reported-by: Mislav Marohnić <mislav.marohnic@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-14git-status: make porcelain more robustMichael J Gruber1-4/+4
git status provides a porcelain mode for porcelain writers with a supposedly stable (plumbing) interface. 7a76c28ff2 ("status: disable translation when --porcelain is used", 2014-03-20) made sure that ahead/behind info is not translated (i.e. is stable). Make sure that the remaining two strings (initial commit, detached head) are stable, too. These changes are for the v1 porcelain interface. While we do have a perfectly stable v2 porcelain interface now, some tools (such as powerline-gitstatus) are written against v1 and profit from fixing v1 without any changes on their side. Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-13pathspec: allow escaped query valuesBrandon Williams2-4/+67
In our own .gitattributes file we have attributes such as: *.[ch] whitespace=indent,trail,space When querying for attributes we want to be able to ask for the exact value, i.e. git ls-files :(attr:whitespace=indent,trail,space) should work, but the commas are used in the attr magic to introduce the next attr, such that this query currently fails with fatal: Invalid pathspec magic 'trail' in ':(attr:whitespace=indent,trail,space)' This change allows escaping characters by a backslash, such that the query git ls-files :(attr:whitespace=indent\,trail\,space) will match all path that have the value "indent,trail,space" for the whitespace attribute. To accomplish this, we need to modify two places. First `parse_long_magic` needs to not stop early upon seeing a comma or closing paren that is escaped. As a second step we need to remove any escaping from the attr value. Based on a patch by Stefan Beller <sbeller@google.com> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-13pathspec: allow querying for attributesBrandon Williams7-9/+382
The pathspec mechanism is extended via the new ":(attr:eol=input)pattern/to/match" syntax to filter paths so that it requires paths to not just match the given pattern but also have the specified attrs attached for them to be chosen. Based on a patch by Stefan Beller <sbeller@google.com> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-13path.c: add xdg_cache_homeDevin Lehmacher2-0/+22
We already have xdg_config_home to format paths relative to XDG_CONFIG_HOME. Let's provide a similar function xdg_cache_home to do the same for paths relative to XDG_CACHE_HOME. Signed-off-by: Devin Lehmacher <lehmacdj@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-13http-walker: fix buffer underflow processing remote alternatesJeff King1-4/+7
If we parse a remote alternates (or http-alternates), we expect relative lines like: ../../foo.git/objects which we convert into "$URL/../foo.git/" (and then use that as a base for fetching more objects). But if the remote feeds us nonsense like just: ../ we will try to blindly strip the last 7 characters, assuming they contain the string "objects". Since we don't _have_ 7 characters at all, this results in feeding a small negative value to strbuf_add(), which converts it to a size_t, resulting in a big positive value. This should consistently fail (since we can't generall allocate the max size_t minus 7 bytes), so there shouldn't be any security implications. Let's fix this by using strbuf_strip_suffix() to drop the characters we want. If they're not present, we'll ignore the alternate (in theory we could use it as-is, but the rest of the http-walker code unconditionally tacks "objects/" back on, so it is it not prepared to handle such a case). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-12Third batch after 2.12Junio C Hamano1-0/+39
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-11blame: move blame_entry duplication to add_blame_entry()René Scharfe1-17/+8
All callers of add_blame_entry() allocate and copy the second argument. Let the function do it for them, reducing code duplication. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-11config: add conditional includeNguyễn Thái Ngọc Duy3-1/+212
Sometimes a set of repositories want to share configuration settings among themselves that are distinct from other such sets of repositories. A user may work on two projects, each of which have multiple repositories, and use one user.email for one project while using another for the other. Setting $GIT_DIR/.config works, but if the penalty of forgetting to update $GIT_DIR/.config is high (especially when you end up cloning often), it may not be the best way to go. Having the settings in ~/.gitconfig, which would work for just one set of repositories, would not well in such a situation. Having separate ${HOME}s may add more problems than it solves. Extend the include.path mechanism that lets a config file include another config file, so that the inclusion can be done only when some conditions hold. Then ~/.gitconfig can say "include config-project-A only when working on project-A" for each project A the user works on. In this patch, the only supported grouping is based on $GIT_DIR (in absolute path), so you would need to group repositories by directory, or something like that to take advantage of it. We already have include.path for unconditional includes. This patch goes with includeIf.<condition>.path to make it clearer that a condition is required. The new config has the same backward compatibility approach as include.path: older git versions that don't understand includeIf will simply ignore them. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-11config.txt: reflow the second include.path paragraphNguyễn Thái Ngọc Duy1-5/+4
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-11config.txt: clarify multiple key values in include.pathNguyễn Thái Ngọc Duy1-2/+2
The phrasing in this paragraph may give an impression that you can only use it once. Rephrase it a bit. Helped-by: Philip Oakley <philipoakley@iee.org> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-10t/interop: add test of old clients against modern git-daemonJeff King2-1/+43
This test just checks that old clients can clone and fetch from a newer git-daemon. The opposite should also be true, but it's hard to test ancient versions of git-daemon because they lack basic options like "--listen". Note that we have to make a slight tweak to the lib-git-daemon helper from the regular tests, so that it starts the daemon with our correct git.a version. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>