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2016-05-06Merge branch 'jc/drop-git-spec-in'Libravatar Junio C Hamano1-13/+6
As nobody maintains our in-tree git.spec.in and distros use their own spec file, we stopped pretending that we support "make rpm". * jc/drop-git-spec-in: Makefile: remove dependency on git.spec Makefile: stop pretending to support rpmbuild
2016-04-29Merge branch 'nd/test-helpers'Libravatar Junio C Hamano1-14/+14
Sources to many test helper binaries (and the generated helpers) have been moved to t/helper/ subdirectory to reduce clutter at the top level of the tree. * nd/test-helpers: test helpers: move test-* to t/helper/ subdirectory Makefile: clean *.o files we create
2016-04-27Makefile: remove dependency on git.specLibravatar Dennis Kaarsemaker1-1/+1
ab214331 (Makefile: stop pretending to support rpmbuild, 2016-04-04) dropped support for rpmbuild using our own specfile by removing git.spec.in, but forgot to remove the dependency of the dist target on git.spec. Signed-off-by: Dennis Kaarsemaker <dennis@kaarsemaker.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-22Merge branch 'ky/imap-send-openssl-1.1.0'Libravatar Junio C Hamano1-6/+0
Upcoming OpenSSL 1.1.0 will break compilation b updating a few APIs we use in imap-send, which has been adjusted for the change. * ky/imap-send-openssl-1.1.0: configure: remove checking for HMAC_CTX_cleanup imap-send: avoid deprecated TLSv1_method() imap-send: check NULL return of SSL_CTX_new() imap-send: use HMAC() function provided by OpenSSL
2016-04-15test helpers: move test-* to t/helper/ subdirectoryLibravatar Nguyễn Thái Ngọc Duy1-12/+12
This keeps top dir a bit less crowded. And because these programs are for testing purposes, it makes sense that they stay somewhere in t/ Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-15Makefile: clean *.o files we createLibravatar Junio C Hamano1-2/+2
The part that removes object files in the 'clean' target predates various Makefile macros that list object files we create, and instead removes the objects with shell glob, perpetually requiring updates whenever a new location that builds object files is added. Simplify the target by removing $(OBJECTS), which is supposed to have all the objects we create during the build. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-13Merge branch 'jc/makefile-redirection-stderr'Libravatar Junio C Hamano1-2/+2
A minor fix in the Makefile. * jc/makefile-redirection-stderr: Makefile: fix misdirected redirections
2016-04-08configure: remove checking for HMAC_CTX_cleanupLibravatar Kazuki Yamaguchi1-6/+0
We don't need it, as we no longer use HMAC_CTX_cleanup() directly. Signed-off-by: Kazuki Yamaguchi <k@rhe.jp> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-06Makefile: stop pretending to support rpmbuildLibravatar Junio C Hamano1-12/+5
Nobody in the active development community seems to watch breakages in the rpmbuild target. As most major RPM based distros use their own specfile when packaging us, they aren't looking after us as their pristine upstream tree, either. At this point, it is turning to be a disservice to the users to pretend that our tree natively supports "make rpmbuild" target when we do not properly maintain it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-05Makefile: fix misdirected redirectionsLibravatar Junio C Hamano1-2/+2
In general "echo 2>&1 $msg" to redirect a possible error message that comes from 'echo' itself into the same standard output stream $msg is getting written to does not make any sense; it is not like we are expecting to see any errors out of 'echo' in these statements, and even if it were the case, there is no reason to prevent the error messages from being sent to the standard error stream. These are clearly meant to send the argument given to echo to the standard error stream as error messages. Correctly redirect by saying "send what is written to the standard output to the standard error", i.e. "1>&2" aka ">&2". Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-16Merge branch 'jc/sane-grep'Libravatar Junio C Hamano1-1/+5
Recent versions of GNU grep is pickier than before to decide if a file is "binary" and refuse to give line-oriented hits when we expect it to, unless explicitly told with "-a" option. As our scripted Porcelains use sane_grep wrapper for line-oriented data, even when the line may contain non-ASCII payload we took from end-user data, use "grep -a" to implement sane_grep wrapper when using an implementation of "grep" that takes the "-a" option. * jc/sane-grep: rebase-i: clarify "is this commit relevant?" test sane_grep: pass "-a" if grep accepts it
2016-03-10sane_grep: pass "-a" if grep accepts itLibravatar Junio C Hamano1-1/+5
Newer versions of GNU grep is reported to be pickier when we feed a non-ASCII input and break some Porcelain scripts. As we know we do not feed random binary file to our own sane_grep wrapper, allow us to always pass "-a" by setting SANE_TEXT_GREP=-a Makefile variable to work it around. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-26Merge branch 'ls/makefile-cflags-developer-tweak'Libravatar Junio C Hamano1-0/+12
There is a new DEVELOPER knob that enables many compiler warning options in the Makefile. * ls/makefile-cflags-developer-tweak: add DEVELOPER makefile knob to check for acknowledged warnings
2016-02-25add DEVELOPER makefile knob to check for acknowledged warningsLibravatar Lars Schneider1-0/+12
We assume Git developers have a reasonably modern compiler and recommend them to enable the DEVELOPER makefile knob to ensure their patches are clear of all compiler warnings the Git core project cares about. Enable the DEVELOPER makefile knob in the Travis-CI build. Suggested-by: Jeff King <peff@peff.net> Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-17Merge branch 'js/mingw-tests'Libravatar Junio C Hamano1-0/+1
Test scripts have been updated to remove assumptions that are not portable between Git for POSIX and Git for Windows, or to skip ones with expectations that are not satisfiable on Git for Windows. * js/mingw-tests: (21 commits) gitignore: ignore generated test-fake-ssh executable mingw: do not bother to test funny file names mingw: skip a test in t9130 that cannot pass on Windows mingw: handle the missing POSIXPERM prereq in t9124 mingw: avoid illegal filename in t9118 mingw: mark t9100's test cases with appropriate prereqs t0008: avoid absolute path mingw: work around pwd issues in the tests mingw: fix t9700's assumption about directory separators mingw: skip test in t1508 that fails due to path conversion tests: turn off git-daemon tests if FIFOs are not available mingw: disable mkfifo-based tests mingw: accomodate t0060-path-utils for MSYS2 mingw: fix t5601-clone.sh mingw: let lstat() fail with errno == ENOTDIR when appropriate mingw: try to delete target directory before renaming mingw: prepare the TMPDIR environment variable for shell scripts mingw: factor out Windows specific environment setup Git.pm: stop assuming that absolute paths start with a slash mingw: do not trust MSYS2's MinGW gettext.sh ...
2016-01-27mingw: fix t5601-clone.shLibravatar Johannes Schindelin1-0/+1
Since baaf233 (connect: improve check for plink to reduce false positives, 2015-04-26), t5601 writes out a `plink.exe` for testing that is actually a shell script. So the assumption that the `.exe` extension implies that the file is *not* a shell script is now wrong. Since there was no love for the idea of allowing `.exe` files to be shell scripts on Windows, let's go the other way round: *make* `plink.exe` a real `.exe`. This fixes t5601-clone.sh in Git for Windows' SDK. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-12Merge branch 'ep/make-phoney'Libravatar Junio C Hamano1-0/+9
A slight update to the Makefile. * ep/make-phoney: Makefile: add missing phony target
2015-12-16Makefile: add missing phony targetLibravatar Elia Pinto1-0/+9
Add some missing phony target to Makefile. Signed-off-by: Elia Pinto <gitter.spiros@gmail.com> Helped-by: Matthieu Moy <Matthieu.Moy@imag.fr> Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-12-08Merge branch 'dt/refs-backend-pre-vtable'Libravatar Junio C Hamano1-1/+2
Code preparation for pluggable ref backends. * dt/refs-backend-pre-vtable: refs: break out ref conflict checks files_log_ref_write: new function initdb: make safe_create_dir public refs: split filesystem-based refs code into a new file refs/refs-internal.h: new header file refname_is_safe(): improve docstring pack_if_possible_fn(): use ref_type() instead of is_per_worktree_ref() copy_msg(): rename to copy_reflog_msg() verify_refname_available(): new function verify_refname_available(): rename function
2015-12-08Merge branch 'ad/sha1-update-chunked' into maintLibravatar Junio C Hamano1-0/+13
Apple's common crypto implementation of SHA1_Update() does not take more than 4GB at a time, and we now have a compile-time workaround for it. * ad/sha1-update-chunked: sha1: allow limiting the size of the data passed to SHA1_Update() sha1: provide another level of indirection for the SHA-1 functions
2015-12-04Merge branch 'ad/sha1-update-chunked'Libravatar Junio C Hamano1-0/+13
Apple's common crypto implementation of SHA1_Update() does not take more than 4GB at a time, and we now have a compile-time workaround for it. * ad/sha1-update-chunked: sha1: allow limiting the size of the data passed to SHA1_Update() sha1: provide another level of indirection for the SHA-1 functions
2015-11-20refs: split filesystem-based refs code into a new fileLibravatar Michael Haggerty1-1/+2
As another step in the move to pluggable reference backends, move the code that is specific to the filesystem-based reference backend (i.e., the current system of storing references as loose and packed files) into a separate file, refs/files-backend.c. Aside from a tiny bit of file header boilerplate, this commit only moves a subset of the code verbatim from refs.c to the new file, as can easily be verified using patience diff: git diff --patience $commit^:refs.c $commit:refs.c git diff --patience $commit^:refs.c $commit:refs/files-backend.c Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jeff King <peff@peff.net>
2015-11-05Merge branch 'rp/link-curl-before-ssl' into maintLibravatar Junio C Hamano1-6/+11
The linkage order of libraries was wrong in places around libcurl. * rp/link-curl-before-ssl: configure.ac: detect ssl need with libcurl Makefile: make curl-config path configurable Makefile: link libcurl before zlib
2015-11-05sha1: allow limiting the size of the data passed to SHA1_Update()Libravatar Atousa Pahlevan Duprat1-0/+13
Using the previous commit's inredirection mechanism for SHA1, support a chunked implementation of SHA1_Update() that limits the amount of data in the chunk passed to SHA1_Update(). This is enabled by using the Makefile variable SHA1_MAX_BLOCK_SIZE to specify chunk size. When using Apple's CommonCrypto library this is set to 1GiB (the implementation cannot handle more 4GiB). Signed-off-by: Atousa Pahlevan Duprat <apahlevan@ieee.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-29Merge branch 'jc/mailinfo-lib'Libravatar Junio C Hamano1-0/+1
The implementation of "git mailinfo" was refactored so that a mailinfo() function can be directly called from inside a process. * jc/mailinfo-lib: (34 commits) mailinfo: remove calls to exit() and die() deep in the callchain mailinfo: handle charset conversion errors in the caller mailinfo: libify mailinfo: keep the parsed log message in a strbuf mailinfo: handle_commit_msg() shouldn't be called after finding patchbreak mailinfo: move content/content_top to struct mailinfo mailinfo: move [ps]_hdr_data to struct mailinfo mailinfo: move cmitmsg and patchfile to struct mailinfo mailinfo: move charset to struct mailinfo mailinfo: move transfer_encoding to struct mailinfo mailinfo: move check for metainfo_charset to convert_to_utf8() mailinfo: move metainfo_charset to struct mailinfo mailinfo: move use_scissors and use_inbody_headers to struct mailinfo mailinfo: move add_message_id and message_id to struct mailinfo mailinfo: move patch_lines to struct mailinfo mailinfo: move filter/header stage to struct mailinfo mailinfo: move global "FILE *fin, *fout" to struct mailinfo mailinfo: move keep_subject & keep_non_patch_bracket to struct mailinfo mailinfo: introduce "struct mailinfo" to hold globals mailinfo: move global "line" into mailinfo() function ...
2015-10-29Merge branch 'rp/link-curl-before-ssl'Libravatar Junio C Hamano1-6/+11
The linkage order of libraries was wrong in places around libcurl. * rp/link-curl-before-ssl: configure.ac: detect ssl need with libcurl Makefile: make curl-config path configurable Makefile: link libcurl before zlib
2015-10-26Merge branch 'mr/worktree-list'Libravatar Junio C Hamano1-0/+1
Add the "list" subcommand to "git worktree". * mr/worktree-list: worktree: add 'list' command worktree: add details to the worktree struct worktree: add a function to get worktree details worktree: refactor find_linked_symref function worktree: add top-level worktree.c
2015-10-21mailinfo: libifyLibravatar Junio C Hamano1-0/+1
Move the bulk of the code from builtin/mailinfo.c to mailinfo.c so that new callers can start calling mailinfo() directly. Note that a few calls to exit() and die() need to be cleaned up for the API to be truly useful, which will come in later steps. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-21Makefile: make curl-config path configurableLibravatar Remi Pommarel1-2/+6
There are situations, e.g. during cross compilation, where curl-config program is not present in the PATH. Make the makefile use a configurable curl-config program passed through CURL_CONFIG variable which can be set through config.mak. Also make this variable tunable through use of autoconf/configure. Configure will set CURL_CONFIG variable in config.mak.autogen to whatever value has been passed to ac_cv_prog_CURL_CONFIG. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-21Makefile: link libcurl before zlibLibravatar Remi Pommarel1-4/+5
For static linking especially library order while linking is important. For example, libcurl wants symbols from zlib when building http-push, http-fetch and remote-curl. So for these programs libcurl has to be linked before zlib. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-20Merge branch 'jk/war-on-sprintf'Libravatar Junio C Hamano1-5/+0
Many allocations that is manually counted (correctly) that are followed by strcpy/sprintf have been replaced with a less error prone constructs such as xstrfmt. Macintosh-specific breakage was noticed and corrected in this reroll. * jk/war-on-sprintf: (70 commits) name-rev: use strip_suffix to avoid magic numbers use strbuf_complete to conditionally append slash fsck: use for_each_loose_file_in_objdir Makefile: drop D_INO_IN_DIRENT build knob fsck: drop inode-sorting code convert strncpy to memcpy notes: document length of fanout path with a constant color: add color_set helper for copying raw colors prefer memcpy to strcpy help: clean up kfmclient munging receive-pack: simplify keep_arg computation avoid sprintf and strcpy with flex arrays use alloc_ref rather than hand-allocating "struct ref" color: add overflow checks for parsing colors drop strcpy in favor of raw sha1_to_hex use sha1_to_hex_r() instead of strcpy daemon: use cld->env_array when re-spawning stat_tracking_info: convert to argv_array http-push: use an argv_array for setup_revisions fetch-pack: use argv_array for index-pack / unpack-objects ...
2015-10-16Merge branch 'jk/make-findstring-makeflags-fix' into maintLibravatar Junio C Hamano1-2/+2
Customization to change the behaviour with "make -w" and "make -s" in our Makefile was broken when they were used together. * jk/make-findstring-makeflags-fix: Makefile: fix MAKEFLAGS tests with multiple flags
2015-10-16Merge branch 'jw/make-arflags-customizable' into maintLibravatar Junio C Hamano1-3/+6
The Makefile always runs the library archiver with hardcoded "crs" options, which was inconvenient for exotic platforms on which people want to use programs with totally different set of command line options. * jw/make-arflags-customizable: Makefile: allow $(ARFLAGS) specified from the command line
2015-10-05Merge branch 'jw/make-arflags-customizable'Libravatar Junio C Hamano1-3/+6
The Makefile always runs the library archiver with hardcoded "crs" options, which was inconvenient for exotic platforms on which people want to use programs with totally different set of command line options. * jw/make-arflags-customizable: Makefile: allow $(ARFLAGS) specified from the command line
2015-10-05Merge branch 'jk/make-findstring-makeflags-fix'Libravatar Junio C Hamano1-2/+2
Customization to change the behaviour with "make -w" and "make -s" in our Makefile was broken when they were used together. * jk/make-findstring-makeflags-fix: Makefile: fix MAKEFLAGS tests with multiple flags
2015-10-05Merge branch 'sb/submodule-helper'Libravatar Junio C Hamano1-0/+1
The infrastructure to rewrite "git submodule" in C is being built incrementally. Let's polish these early parts well enough and make them graduate to 'next' and 'master', so that the more involved follow-up can start cooking on a solid ground. * sb/submodule-helper: submodule: rewrite `module_clone` shell function in C submodule: rewrite `module_name` shell function in C submodule: rewrite `module_list` shell function in C
2015-10-05Makefile: drop D_INO_IN_DIRENT build knobLibravatar Jeff King1-5/+0
Now that fsck has dropped its inode-sorting, there are no longer any users of this knob, and it can go away. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-10-02worktree: add top-level worktree.cLibravatar Michael Rappazzo1-0/+1
worktree.c contains functions to work with and get information from worktrees. This introduction moves functions related to worktrees from branch.c into worktree.c Signed-off-by: Michael Rappazzo <rappazzo@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-14Merge branch 'sg/help-group'Libravatar Junio C Hamano1-1/+1
* sg/help-group: Makefile: use SHELL_PATH when running generate-cmdlist.sh
2015-09-10Makefile: use SHELL_PATH when running generate-cmdlist.shLibravatar Alejandro R. Sedeño1-1/+1
Non-POSIX shells, such as /bin/sh on SunOS, do not support $((...)) arithmetic expansion or $(...) command substitution needed by generate-cmdlist.sh. Make sure that we use a POSIX compliant shell $(SHELL_PATH) when running generate-cmdlist.sh. Signed-off-by: Alejandro R. Sedeño <asedeno@mit.edu> Acked-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-10Makefile: allow $(ARFLAGS) specified from the command lineLibravatar Junio C Hamano1-3/+6
We can do this because we have a very simple needs and run "ar" exactly the same way everywhere ;-). Requested-by: Jeffrey Walton Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-10Makefile: fix MAKEFLAGS tests with multiple flagsLibravatar John Keeping1-2/+2
findstring is defined as $(findstring FIND,IN) so if multiple flags are set these tests do the wrong thing unless $(MAKEFLAGS) is the second argument. Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-03Merge branch 'sg/help-group' into maintLibravatar Junio C Hamano1-2/+2
We rewrote one of the build scripts in Perl but this reimplements in Bourne shell. * sg/help-group: generate-cmdlist: re-implement as shell script
2015-09-03submodule: rewrite `module_list` shell function in CLibravatar Stefan Beller1-0/+1
Most of the submodule operations work on a set of submodules. Calculating and using this set is usually done via: module_list "$@" | { while read mode sha1 stage sm_path do # the actual operation done } Currently the function `module_list` is implemented in the git-submodule.sh as a shell script wrapping a perl script. The rewrite is in C, such that it is faster and can later be easily adapted when other functions are rewritten in C. git-submodule.sh, similar to the builtin commands, will navigate to the top-most directory of the repository and keep the subdirectory as a variable. As the helper is called from within the git-submodule.sh script, we are already navigated to the root level, but the path arguments are still relative to the subdirectory we were in when calling git-submodule.sh. That's why there is a `--prefix` option pointing to an alternative path which to anchor relative path arguments. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31Merge branch 'hv/submodule-config'Libravatar Junio C Hamano1-0/+2
The gitmodules API accessed from the C code learned to cache stuff lazily. * hv/submodule-config: submodule: allow erroneous values for the fetchRecurseSubmodules option submodule: use new config API for worktree configurations submodule: extract functions for config set and lookup submodule: implement a config API for lookup of .gitmodules values
2015-08-26Merge branch 'sg/help-group'Libravatar Junio C Hamano1-2/+2
We rewrote one of the build scripts in Perl but this reimplements in Bourne shell. * sg/help-group: generate-cmdlist: re-implement as shell script
2015-08-25Merge branch 'mh/tempfile'Libravatar Junio C Hamano1-0/+1
The "lockfile" API has been rebuilt on top of a new "tempfile" API. * mh/tempfile: credential-cache--daemon: use tempfile module credential-cache--daemon: delete socket from main() gc: use tempfile module to handle gc.pid file lock_repo_for_gc(): compute the path to "gc.pid" only once diff: use tempfile module setup_temporary_shallow(): use tempfile module write_shared_index(): use tempfile module register_tempfile(): new function to handle an existing temporary file tempfile: add several functions for creating temporary files prepare_tempfile_object(): new function, extracted from create_tempfile() tempfile: a new module for handling temporary files commit_lock_file(): use get_locked_file_path() lockfile: add accessor get_lock_file_path() lockfile: add accessors get_lock_file_fd() and get_lock_file_fp() create_bundle(): duplicate file descriptor to avoid closing it twice lockfile: move documentation to lockfile.h and lockfile.c
2015-08-25generate-cmdlist: re-implement as shell scriptLibravatar Eric Sunshine1-2/+2
527ec39 (generate-cmdlist: parse common group commands, 2015-05-21) replaced generate-cmdlist.sh with a more functional Perl version, generate-cmdlist.perl. The Perl version gleans named tags from a new "common groups" section in command-list.txt and recognizes those tags in "command list" section entries in place of the old 'common' tag. This allows git-help to, not only recognize, but also group common commands. Although the tests require Perl, 527ec39 creates an unconditional dependence upon Perl in the build system itself, which can not be overridden with NO_PERL. Such a dependency may be undesirable; for instance, the 'git-lite' package in the FreeBSD ports tree is intended as a minimal Git installation (which may, for example, be useful on servers needing only local clone and update capability), which, historically, has not depended upon Perl[1]. Therefore, revive generate-cmdlist.sh and extend it to recognize "common groups" and its named tags. Retire generate-cmdlist.perl. [1]: http://thread.gmane.org/gmane.comp.version-control.git/275905/focus=276132 Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19Merge 'hv/submodule-config' to 'sb/submodule-helper'Libravatar Junio C Hamano1-0/+2
* hv/submodule-config: submodule: allow erroneous values for the fetchRecurseSubmodules option submodule: use new config API for worktree configurations submodule: extract functions for config set and lookup submodule: implement a config API for lookup of .gitmodules values
2015-08-19submodule: implement a config API for lookup of .gitmodules valuesLibravatar Heiko Voigt1-0/+2
In a superproject some commands need to interact with submodules. They need to query values from the .gitmodules file either from the worktree of from certain revisions. At the moment this is quite hard since a caller would need to read the .gitmodules file from the history and then parse the values. We want to provide an API for this so we have one place to get values from .gitmodules from any revision (including the worktree). The API is realized as a cache which allows us to lazily read .gitmodules configurations by commit into a runtime cache which can then be used to easily lookup values from it. Currently only the values for path or name are stored but it can be extended for any value needed. It is expected that .gitmodules files do not change often between commits. Thats why we lookup the .gitmodules sha1 from a commit and then either lookup an already parsed configuration or parse and cache an unknown one for each sha1. The cache is lazily build on demand for each requested commit. This cache can be used for all purposes which need knowledge about submodule configurations. Example use cases are: * Recursive submodule checkout needs to lookup a submodule name from its path when a submodule first appears. This needs be done before this configuration exists in the worktree. * The implementation of submodule support for 'git archive' needs to lookup the submodule name to generate the archive when given a revision that is not checked out. * 'git fetch' when given the --recurse-submodules=on-demand option (or configuration) needs to lookup submodule names by path from the database rather than reading from the worktree. For new submodule it needs to lookup the name from its path to allow cloning new submodules into the .git folder so they can be checked out without any network interaction when the user does a checkout of that revision. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>