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authorJunio C Hamano <gitster@pobox.com>2013-09-09 21:36:15 (GMT)
committerJunio C Hamano <gitster@pobox.com>2013-09-09 21:36:15 (GMT)
commitb02f5aeda6f66ac3be9b2e35f9b237d4f1f80d73 (patch)
tree8b85c36e79c9f3dffbc9ea9df9c812c5f5070514 /Documentation/technical
parentde9a25354aa22aa6796787f3ef3af276fba82339 (diff)
parent95c16418f0375e2fc325f32c3d7578fba9cfd7ef (diff)
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Merge branch 'jl/submodule-mv'
"git mv A B" when moving a submodule A does "the right thing", inclusing relocating its working tree and adjusting the paths in the .gitmodules file. * jl/submodule-mv: (53 commits) rm: delete .gitmodules entry of submodules removed from the work tree mv: update the path entry in .gitmodules for moved submodules submodule.c: add .gitmodules staging helper functions mv: move submodules using a gitfile mv: move submodules together with their work trees rm: do not set a variable twice without intermediate reading. t6131 - skip tests if on case-insensitive file system parse_pathspec: accept :(icase)path syntax pathspec: support :(glob) syntax pathspec: make --literal-pathspecs disable pathspec magic pathspec: support :(literal) syntax for noglob pathspec kill limit_pathspec_to_literal() as it's only used by parse_pathspec() parse_pathspec: preserve prefix length via PATHSPEC_PREFIX_ORIGIN parse_pathspec: make sure the prefix part is wildcard-free rename field "raw" to "_raw" in struct pathspec tree-diff: remove the use of pathspec's raw[] in follow-rename codepath remove match_pathspec() in favor of match_pathspec_depth() remove init_pathspec() in favor of parse_pathspec() remove diff_tree_{setup,release}_paths convert common_prefix() to use struct pathspec ...
Diffstat (limited to 'Documentation/technical')
-rw-r--r--Documentation/technical/api-setup.txt38
1 files changed, 37 insertions, 1 deletions
diff --git a/Documentation/technical/api-setup.txt b/Documentation/technical/api-setup.txt
index 4f63a04..540e455 100644
--- a/Documentation/technical/api-setup.txt
+++ b/Documentation/technical/api-setup.txt
@@ -8,6 +8,42 @@ Talk about
* is_inside_git_dir()
* is_inside_work_tree()
* setup_work_tree()
-* get_pathspec()
(Dscho)
+
+Pathspec
+--------
+
+See glossary-context.txt for the syntax of pathspec. In memory, a
+pathspec set is represented by "struct pathspec" and is prepared by
+parse_pathspec(). This function takes several arguments:
+
+- magic_mask specifies what features that are NOT supported by the
+ following code. If a user attempts to use such a feature,
+ parse_pathspec() can reject it early.
+
+- flags specifies other things that the caller wants parse_pathspec to
+ perform.
+
+- prefix and args come from cmd_* functions
+
+get_pathspec() is obsolete and should never be used in new code.
+
+parse_pathspec() helps catch unsupported features and reject them
+politely. At a lower level, different pathspec-related functions may
+not support the same set of features. Such pathspec-sensitive
+functions are guarded with GUARD_PATHSPEC(), which will die in an
+unfriendly way when an unsupported feature is requested.
+
+The command designers are supposed to make sure that GUARD_PATHSPEC()
+never dies. They have to make sure all unsupported features are caught
+by parse_pathspec(), not by GUARD_PATHSPEC. grepping GUARD_PATHSPEC()
+should give the designers all pathspec-sensitive codepaths and what
+features they support.
+
+A similar process is applied when a new pathspec magic is added. The
+designer lifts the GUARD_PATHSPEC restriction in the functions that
+support the new magic. At the same time (s)he has to make sure this
+new feature will be caught at parse_pathspec() in commands that cannot
+handle the new magic in some cases. grepping parse_pathspec() should
+help.