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8a42c98501
Support ":/" magic string that can be prefixed to a pathspec element to
say "this names the path from the top-level of the working tree", when
you are in the subdirectory.
For example, you should be able to say:
$ edit Makefile ;# top-level
$ cd Documentation
$ edit git.txt ;# in the subdirectory
and then do one of three things, still inside the subdirectory:
$ git add -u . ;# add only Documentation/git.txt
$ git add -u :/ ;# add everything, including paths outside Documentation
$ git add -u ;# whatever the default setting is.
To truly support magic pathspec, the API needs to be restructured so that
get_pathspec() and init_pathspec() are unified into one call. Currently,
the former just prefixes the user supplied pathspec with the current
subdirectory path, and the latter takes the output from the former and
pre-parses them into a bit richer structure for easier handling. They
should become a single API function that takes the current subdirectory
path and the remainder of argv[] (after parsing --options and revision
arguments from the command line) and returns an array of parsed pathspec
elements, and "magic" should become attributes of struct pathspec_item.
This patch implements only "top" magic because it can be hacked into the
system without such a refactoring.
The syntax for magic pathspec prefix is designed to be extensible yet
simple to type to invoke a simple magic like "from the top". The parser
for the magic prefix is hooked into get_pathspec() function in this patch,
and it needs to be moved when we refactor the API.
But we have to start from somewhere.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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