git/submodule.c, branch v2.12.3

real_pathdup(): fix callsites that wanted it to die on error

2017-03-08T22:38:41Z

In 4ac9006f832 (real_path: have callers use real_pathdup and strbuf_realpath, 2016-12-12), we changed the xstrdup(real_path()) pattern to use real_pathdup() directly. The problem with this change is that real_path() calls strbuf_realpath() with die_on_error = 1 while real_pathdup() calls it with die_on_error = 0. Meaning that in cases where real_path() causes Git to die() with an error message, real_pathdup() is silent and returns NULL instead. The callers, however, are ill-prepared for that change, as they expect the return value to be non-NULL (and otherwise the function died with an appropriate error message). Fix this by extending real_pathdup()'s signature to accept the die_on_error flag and simply pass it through to strbuf_realpath(), and then adjust all callers after a careful audit whether they would handle NULLs well. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano

submodule absorbing: fix worktree/gitdir pointers recursively for non-moves

2017-01-26T19:01:04Z

Consider having a submodule 'sub' and a nested submodule at 'sub/nested'. When nested is already absorbed into sub, but sub is not absorbed into its superproject, then we need to fixup the gitfile and core.worktree setting for 'nested' when absorbing 'sub', but we do not need to move its git dir around. Previously 'nested's gitfile contained "gitdir: ../.git/modules/nested"; it has to be corrected to "gitdir: ../../.git/modules/sub1/modules/nested". An alternative I considered to do this work lazily, i.e. when resolving "../.git/modules/nested", we would notice the ".git" being a gitfile linking to another path. That seemed to be robuster by design, but harder to get the implementation right. Maybe we have to do that anyway once we try to have submodules and worktrees working nicely together, but for now just produce 'correct' (i.e. direct) pointers. Signed-off-by: Stefan Beller Signed-off-by: Junio C Hamano

Merge branch 'sb/submodule-cleanup-export-git-dir-env'

2017-01-18T23:12:14Z

Code cleanup. * sb/submodule-cleanup-export-git-dir-env: submodule.c: use GIT_DIR_ENVIRONMENT consistently

Merge branch 'sb/submodule-rm-absorb'

2017-01-18T23:12:11Z

"git rm" used to refuse to remove a submodule when it has its own git repository embedded in its working tree. It learned to move the repository away to $GIT_DIR/modules/ of the superproject instead, and allow the submodule to be deleted (as long as there will be no loss of local modifications, that is). * sb/submodule-rm-absorb: rm: absorb a submodules git dir before deletion submodule: rename and add flags to ok_to_remove_submodule submodule: modernize ok_to_remove_submodule to use argv_array submodule.h: add extern keyword to functions

Merge branch 'bw/grep-recurse-submodules'

2017-01-18T23:12:11Z

"git grep" has been taught to optionally recurse into submodules. * bw/grep-recurse-submodules: grep: search history of moved submodules grep: enable recurse-submodules to work on objects grep: optionally recurse into submodules grep: add submodules as a grep source type submodules: load gitmodules file from commit sha1 submodules: add helper to determine if a submodule is initialized submodules: add helper to determine if a submodule is populated real_path: canonicalize directory separators in root parts real_path: have callers use real_pathdup and strbuf_realpath real_path: create real_pathdup real_path: convert real_path_internal to strbuf_realpath real_path: resolve symlinks by hand

Merge branch 'sb/submodule-embed-gitdir'

2017-01-10T23:24:28Z

A new submodule helper "git submodule embedgitdirs" to make it easier to move embedded .git/ directory for submodules in a superproject to .git/modules/ (and point the latter with the former that is turned into a "gitdir:" file) has been added. * sb/submodule-embed-gitdir: worktree: initialize return value for submodule_uses_worktrees submodule: add absorb-git-dir function move connect_work_tree_and_git_dir to dir.h worktree: check if a submodule uses worktrees test-lib-functions.sh: teach test_commit -C submodule helper: support super prefix submodule: use absolute path for computing relative path connecting

submodule.c: use GIT_DIR_ENVIRONMENT consistently

2017-01-07T21:10:02Z

In C code we have the luxury of having constants for all the important things that are hard coded. This is the only place in C that hard codes the git directory environment variable, so fix it. Signed-off-by: Stefan Beller Reviewed-by: Jeff King Signed-off-by: Junio C Hamano

submodule: rename and add flags to ok_to_remove_submodule

2016-12-27T22:19:35Z

In different contexts the question "Is it ok to delete a submodule?" may be answered differently. In 293ab15eea (submodule: teach rm to remove submodules unless they contain a git directory, 2012-09-26) a case was made that we can safely ignore ignored untracked files for removal as we explicitely ask for the removal of the submodule. In a later patch we want to remove submodules even when the user doesn't explicitly ask for it (e.g. checking out a tree-ish in which the submodule doesn't exist). In that case we want to be more careful when it comes to deletion of untracked files. As of this patch it is unclear how this will be implemented exactly, so we'll offer flags in which the caller can specify how the different untracked files ought to be handled. As the flags allow the function to not die on an error when spawning a child process, we need to find an appropriate return code for the case when the child process could not be started. As in that case we cannot tell if the submodule is ok to remove, we'd want to return 'false'. As only 0 is understood as false, rename the function to invert the meaning, i.e. the return code of 0 signals the removal of the submodule is fine, and other values can be used to return a more precise answer what went wrong. Signed-off-by: Stefan Beller Signed-off-by: Junio C Hamano

submodule: modernize ok_to_remove_submodule to use argv_array

2016-12-27T22:19:35Z

Instead of constructing the NULL terminated array ourselves, we should make use of the argv_array infrastructure. While at it, adapt the error messages to reflect the actual invocation. Signed-off-by: Stefan Beller Signed-off-by: Junio C Hamano

submodules: load gitmodules file from commit sha1

2016-12-22T19:47:33Z

teach submodules to load a '.gitmodules' file from a commit sha1. This enables the population of the submodule_cache to be based on the state of the '.gitmodules' file from a particular commit. Signed-off-by: Brandon Williams Signed-off-by: Junio C Hamano