git tag --contains: avoid stack overflow
In large repos, the recursion implementation of contains(commit,
commit_list) may result in a stack overflow. Replace the recursion with
a loop to fix it.
This problem is more apparent on Windows than on Linux, where the stack
is more limited by default.
See also this thread on the msysGit list:
https://groups.google.com/d/topic/msysgit/FqT6boJrb2g/discussion
[jes: re-written to imitate the original recursion more closely]
Thomas Braun pointed out several documentation shortcomings.
Tests are run only if ulimit -s is available. This means they cannot
be run on Windows.
Signed-off-by: Jean-Jacques Lafay <jeanjacques.lafay@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Tested-by: Stepan Kasal <kasal@ucw.cz>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>