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2013-01-28Merge branch 'mh/ceiling' into maintLibravatar Junio C Hamano1-8/+0
An element on GIT_CEILING_DIRECTORIES list that does not name the real path to a directory (i.e. a symbolic link) could have caused the GIT_DIR discovery logic to escape the ceiling. * mh/ceiling: string_list_longest_prefix(): remove function setup_git_directory_gently_1(): resolve symlinks in ceiling paths longest_ancestor_length(): require prefix list entries to be normalized longest_ancestor_length(): take a string_list argument for prefixes longest_ancestor_length(): use string_list_split() Introduce new function real_path_if_valid() real_path_internal(): add comment explaining use of cwd Introduce new static function real_path_internal()
2013-01-14Merge branch 'jk/unify-exit-code-by-receiving-signal' into maintLibravatar Junio C Hamano1-4/+2
* jk/unify-exit-code-by-receiving-signal: run-command: encode signal death as a positive integer
2013-01-14Merge branch 'mk/maint-graph-infinity-loop' into maintLibravatar Junio C Hamano1-5/+5
* mk/maint-graph-infinity-loop: graph.c: infinite loop in git whatchanged --graph -m
2013-01-11Merge branch 'as/api-allocation-doc' into maintLibravatar Junio C Hamano1-6/+8
* as/api-allocation-doc: api-allocation-growing.txt: encourage better variable naming
2013-01-06api-allocation-growing.txt: encourage better variable namingLibravatar Adam Spiers1-6/+8
The documentation for the ALLOC_GROW API implicitly encouraged developers to use "ary" as the variable name for the array which is dynamically grown. However "ary" is an unusual abbreviation hardly used anywhere else in the source tree, and it is also better to name variables based on their contents not on their type. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-06run-command: encode signal death as a positive integerLibravatar Jeff King1-4/+2
When a sub-command dies due to a signal, we encode the signal number into the numeric exit status as "signal - 128". This is easy to identify (versus a regular positive error code), and when cast to an unsigned integer (e.g., by feeding it to exit), matches what a POSIX shell would return when reporting a signal death in $? or through its own exit code. So we have a negative value inside the code, but once it passes across an exit() barrier, it looks positive (and any code we receive from a sub-shell will have the positive form). E.g., death by SIGPIPE (signal 13) will look like -115 to us in inside git, but will end up as 141 when we call exit() with it. And a program killed by SIGPIPE but run via the shell will come to us with an exit code of 141. Unfortunately, this means that when the "use_shell" option is set, we need to be on the lookout for _both_ forms. We might or might not have actually invoked the shell (because we optimize out some useless shell calls). If we didn't invoke the shell, we will will see the sub-process's signal death directly, and run-command converts it into a negative value. But if we did invoke the shell, we will see the shell's 128+signal exit status. To be thorough, we would need to check both, or cast the value to an unsigned char (after checking that it is not -1, which is a magic error value). Fortunately, most callsites do not care at all whether the exit was from a code or from a signal; they merely check for a non-zero status, and sometimes propagate the error via exit(). But for the callers that do care, we can make life slightly easier by just using the consistent positive form. This actually fixes two minor bugs: 1. In launch_editor, we check whether the editor died from SIGINT or SIGQUIT. But we checked only the negative form, meaning that we would fail to notice a signal death exit code which was propagated through the shell. 2. In handle_alias, we assume that a negative return value from run_command means that errno tells us something interesting (like a fork failure, or ENOENT). Otherwise, we simply propagate the exit code. Negative signal death codes confuse us, and we print a useless "unable to run alias 'foo': Success" message. By encoding signal deaths using the positive form, the existing code just propagates it as it would a normal non-zero exit code. The downside is that callers of run_command can no longer differentiate between a signal received directly by the sub-process, and one propagated. However, no caller currently cares, and since we already optimize out some calls to the shell under the hood, that distinction is not something that should be relied upon by callers. Fix the same logic in t/test-terminal.perl for consistency [jc: raised by Jonathan in the discussion]. Signed-off-by: Jeff King <peff@peff.net> Acked-by: Johannes Sixt <j6t@kdbg.org> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-21Merge branch 'ta/new-command-howto'Libravatar Junio C Hamano1-99/+0
* ta/new-command-howto: Move ./technical/api-command.txt to ./howto/new-command.txt
2012-12-21Merge branch 'ta/api-index-doc'Libravatar Junio C Hamano1-2/+0
* ta/api-index-doc: Remove misleading date from api-index-skel.txt
2012-12-21Merge branch 'nd/index-format-doc'Libravatar Junio C Hamano1-2/+3
* nd/index-format-doc: index-format.txt: clarify what is "invalid"
2012-12-21Move ./technical/api-command.txt to ./howto/new-command.txtLibravatar Thomas Ackermann1-99/+0
The contents of this document does not describe any particular API, but is more about the way to add a new command, which belongs to the "How To" section of the documentation suite. Signed-off-by: Thomas Ackermann <th.acker@arcor.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-16Remove misleading date from api-index-skel.txtLibravatar Thomas Ackermann1-2/+0
Signed-off-by: Thomas Ackermann <th.acker@arcor.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-15Renumber list in api-command.txtLibravatar Thomas Ackermann1-7/+7
Start list with 1 instead of 0; ASCIIDOC will renumber it anyway. Signed-off-by: Thomas Ackermann <th.acker@arcor.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-13index-format.txt: clarify what is "invalid"Libravatar Nguyễn Thái Ngọc Duy1-2/+3
A cache-tree entry with a negative entry count is considered invalid by the current Git; it records that we do not know the object name of a tree that would result by writing the directory covered by the cache-tree as a tree object. Clarify that any entry with a negative entry count is invalid, but the implementations must write -1 there. This way, we can later decide to allow writers to use negative values other than -1 to encode optional information on such invalidated entries without harming interoperability; we do not know what will be encoded and how, so we keep these other negative values as reserved for now. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-26Documentation: how to add a new commandLibravatar Eric S. Raymond1-0/+99
This document contains no new policies or proposals; it attempts to document established practices and interface requirements. Signed-off-by: Eric S. Raymond <esr@thyrsus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-20Merge branch 'ta/doc-cleanup'Libravatar Junio C Hamano6-29/+36
* ta/doc-cleanup: Documentation: build html for all files in technical and howto Documentation/howto: convert plain text files to asciidoc Documentation/technical: convert plain text files to asciidoc Change headline of technical/send-pack-pipeline.txt to not confuse its content with content from git-send-pack.txt Shorten two over-long lines in git-bisect-lk2009.txt by abbreviating some sha1 Split over-long synopsis in git-fetch-pack.txt into several lines
2012-11-15Merge branch 'mh/notes-string-list'Libravatar Junio C Hamano1-1/+8
Improve the asymptotic performance of the cat_sort_uniq notes merge strategy. * mh/notes-string-list: string_list_add_refs_from_colon_sep(): use string_list_split() notes: fix handling of colon-separated values combine_notes_cat_sort_uniq(): sort and dedup lines all at once Initialize sort_uniq_list using named constant string_list: add a function string_list_remove_empty_items()
2012-11-08string_list: add a function string_list_remove_empty_items()Libravatar Michael Haggerty1-1/+8
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Acked-by: Johan Herland <johan@herland.net> Signed-off-by: Jeff King <peff@peff.net>
2012-11-04strbuf_split*(): document functionsLibravatar Michael Haggerty1-0/+16
Document strbuf_split_buf(), strbuf_split_str(), strbuf_split_max(), strbuf_split(), and strbuf_list_free() in the header file and in api-strbuf.txt. (These functions were previously completely undocumented.) Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jeff King <peff@peff.net>
2012-10-29string_list_longest_prefix(): remove functionLibravatar Michael Haggerty1-8/+0
This function was added in f103f95b11d087f07c0c48bf784cd9197e18f203 in the erroneous expectation that it would be used in the reimplementation of longest_ancestor_length(). But it turned out to be easier to use a function specialized for comparing path prefixes (i.e., one that knows about slashes and root paths) than to prepare the paths in such a way that a generic string prefix comparison function can be used. So delete string_list_longest_prefix() and its documentation and test cases. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jeff King <peff@peff.net>
2012-10-25Merge branch 'fa/remote-svn'Libravatar Jeff King1-0/+8
A GSoC project. * fa/remote-svn: Add a test script for remote-svn remote-svn: add marks-file regeneration Add a svnrdump-simulator replaying a dump file for testing remote-svn: add incremental import remote-svn: Activate import/export-marks for fast-import Create a note for every imported commit containing svn metadata vcs-svn: add fast_export_note to create notes Allow reading svn dumps from files via file:// urls remote-svn, vcs-svn: Enable fetching to private refs When debug==1, start fast-import with "--stats" instead of "--quiet" Add documentation for the 'bidi-import' capability of remote-helpers Connect fast-import to the remote-helper via pipe, adding 'bidi-import' capability Add argv_array_detach and argv_array_free_detached Add svndump_init_fd to allow reading dumps from arbitrary FDs Add git-remote-testsvn to Makefile Implement a remote helper for svn in C
2012-10-16Documentation/technical: convert plain text files to asciidocLibravatar Thomas Ackermann5-27/+34
These were not originally meant for asciidoc, but they are already so close. Mark them up in asciidoc. Signed-off-by: Thomas Ackermann <th.acker@arcor.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-16Change headline of technical/send-pack-pipeline.txt to not confuse its ↵Libravatar Thomas Ackermann1-2/+2
content with content from git-send-pack.txt Signed-off-by: Thomas Ackermann <th.acker@arcor.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-07Add argv_array_detach and argv_array_free_detachedLibravatar Florian Achleitner1-0/+8
Allow detaching of ownership of the argv_array's contents and add a function to free those detached argv_arrays later. This makes it possible to use argv_array efficiently with the exiting struct child_process which only contains a member char **argv. Add to documentation. Signed-off-by: Florian Achleitner <florian.achleitner.2.6.31@gmail.com> Acked-by: David Michael Barr <b@rr-dav.id.au> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-25graph.c: infinite loop in git whatchanged --graph -mLibravatar Michał Kiedrowicz1-5/+5
Running "whatchanged --graph -m" on a simple two-head merges can fall into infinite loop. Signed-off-by: Michał Kiedrowicz <michal.kiedrowicz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-21Merge branch 'mh/fetch-filter-refs'Libravatar Junio C Hamano1-3/+4
Finishing touch to update documentation of string-list to make sure the earlier rewrite of ref-list match logic that depends on its sort order will not get broken. * mh/fetch-filter-refs: string_list API: document what "sorted" means
2012-09-18Merge branch 'jc/make-static'Libravatar Junio C Hamano1-3/+0
Turn many file-scope private symbols to static to reduce the global namespace contamination. * jc/make-static: sequencer.c: mark a private file-scope symbol as static ident.c: mark private file-scope symbols as static trace.c: mark a private file-scope symbol as static wt-status.c: mark a private file-scope symbol as static read-cache.c: mark a private file-scope symbol as static strbuf.c: mark a private file-scope symbol as static sha1-array.c: mark a private file-scope symbol as static symlinks.c: mark private file-scope symbols as static notes.c: mark a private file-scope symbol as static rerere.c: mark private file-scope symbols as static graph.c: mark private file-scope symbols as static diff.c: mark a private file-scope symbol as static commit.c: mark a file-scope private symbol as static builtin/notes.c: mark file-scope private symbols as static
2012-09-18Sync with 1.7.12.1Libravatar Junio C Hamano1-2/+4
2012-09-18Doc: Improve shallow depth wordingLibravatar Philip Oakley1-2/+4
Avoid confusion in compound sentence about the start of the commit set and the depth measure. Use two sentences. Signed-off-by: Philip Oakley <philipoakley@iee.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-18string_list API: document what "sorted" meansLibravatar Michael Haggerty1-3/+4
The recent work on using string_list to represent the list of refs that matched with the refs on the other side during fetch heavily depends on the sort order by string_list's implementation, and changing string_list will break it. Document that it uses strcmp() order, at least for now. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-17Merge branch 'mh/string-list'Libravatar Junio C Hamano1-5/+63
* mh/string-list: api-string-list.txt: initialize the string_list the easy way string_list: add a function string_list_longest_prefix() string_list: add a new function, string_list_remove_duplicates() string_list: add a new function, filter_string_list() string_list: add two new functions for splitting strings string_list: add function string_list_append_nodup()
2012-09-15sha1-array.c: mark a private file-scope symbol as staticLibravatar Junio C Hamano1-3/+0
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-12api-string-list.txt: initialize the string_list the easy wayLibravatar Michael Haggerty1-2/+1
In the demo code blurb, show how to initialize the string_list using STRING_LIST_INIT_NODUP rather than memset(). Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-12string_list: add a function string_list_longest_prefix()Libravatar Michael Haggerty1-0/+8
Add a function that finds the longest string from a string_list that is a prefix of a given string. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-12string_list: add a new function, string_list_remove_duplicates()Libravatar Michael Haggerty1-0/+9
Add a function that deletes duplicate entries from a sorted string_list. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-12string_list: add a new function, filter_string_list()Libravatar Michael Haggerty1-0/+11
This function allows entries that don't match a specified criterion to be discarded from a string_list while preserving the order of the remaining entries. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-12string_list: add two new functions for splitting stringsLibravatar Michael Haggerty1-1/+21
Add two new functions, string_list_split() and string_list_split_in_place(). These split a string into a string_list on a separator character. The first makes copies of the substrings (leaving the input string untouched) and the second splits the original string in place, overwriting the separator characters with NULs and referring to the original string's memory. These functions are similar to the strbuf_split_*() functions except that they work with the more powerful string_list interface. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-12string_list: add function string_list_append_nodup()Libravatar Michael Haggerty1-3/+14
Add a new function that appends a string to a string_list without copying it. This can be used to pass ownership of an already-copied string to a string_list that has strdup_strings set. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-11Merge branch 'jk/argv-array'Libravatar Junio C Hamano1-0/+4
Use argv-array API in "git fetch" implementation. * jk/argv-array: submodule: use argv_array instead of hand-building arrays fetch: use argv_array instead of hand-building arrays argv-array: fix bogus cast when freeing array argv-array: add pop function
2012-09-02argv-array: add pop functionLibravatar Jeff King1-0/+4
Sometimes we build a set of similar command lines, differing only in the final arguments (e.g., "fetch --multiple"). To use argv_array for this, you have to either push the same set of elements repeatedly, or break the abstraction by manually manipulating the array's internal members. Instead, let's provide a sanctioned "pop" function to remove elements from the end. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-25add 'git credential' plumbing commandLibravatar Javier Roucher Iglesias1-36/+3
The credential API is in C, and not available to scripting languages. Expose the functionalities of the API by wrapping them into a new plumbing command "git credentials". In other words, replace the internal "test-credential" by an official Git command. Most documentation writen by: Jeff King <peff@peff.net> Signed-off-by: Pavel Volek <Pavel.Volek@ensimag.imag.fr> Signed-off-by: Kim Thuat Nguyen <Kim-Thuat.Nguyen@ensimag.imag.fr> Signed-off-by: Javier Roucher Iglesias <Javier.Roucher-Iglesias@ensimag.imag.fr> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-12Merge branch 'mm/api-credentials-doc'Libravatar Junio C Hamano1-1/+4
* mm/api-credentials-doc: api-credential.txt: document that helpers field is filled-in automatically
2012-06-12api-credential.txt: document that helpers field is filled-in automaticallyLibravatar Matthieu Moy1-1/+4
It was unclear whether the field was to be specified by the user of the API. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-08Merge branch 'mm/api-credentials-doc'Libravatar Junio C Hamano3-5/+5
Finishing touches... * mm/api-credentials-doc: docs: fix cross-directory linkgit references
2012-06-08docs: fix cross-directory linkgit referencesLibravatar Jeff King3-5/+5
Most of our documentation is in a single directory, so using linkgit:git-config[1] just generates a relative link in the same directory. However, this is not the case with the API documentation in technical/*, which need to refer to git-config from the parent directory. We can fix this by passing a special prefix attribute when building in a subdirectory, and respecting that prefix in our linkgit definitions. We only have to modify the html linkgit definition. For manpages, we can ignore this for two reasons: 1. we do not generate actual links to the file in manpages, but instead just give the name and section of the linked manpage 2. we do not currently build manpages for subdirectories, only html Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-07Merge branch 'mm/api-credentials-doc'Libravatar Junio C Hamano3-7/+60
* mm/api-credentials-doc: api-credentials.txt: add "see also" section api-credentials.txt: mention credential.helper explicitly api-credentials.txt: show the big picture first doc: fix xref link from api docs to manual pages
2012-06-04api-credentials.txt: add "see also" sectionLibravatar Matthieu Moy1-0/+7
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-04api-credentials.txt: mention credential.helper explicitlyLibravatar Matthieu Moy1-2/+4
The name of the configuration variable was mentioned only at the very end of the explanation, in a place specific to a specific rule, hence it was not very clear what the specification was about. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-04api-credentials.txt: show the big picture firstLibravatar Matthieu Moy1-3/+47
The API documentation targets two kinds of developers: those using the C API, and those writing remote-helpers. The document was not clear about which part was useful to which category, and for example, the C API could be mistakenly thought as an API for writting remote helpers. Based-on-patch-by: Jeff King <peff@peff.net> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-04doc: fix xref link from api docs to manual pagesLibravatar Junio C Hamano2-2/+2
They are one-level above, so refer them as linkgit:../git-foo[n] with "../" Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-14Sync with maintLibravatar Junio C Hamano1-2/+2