Mercurial > hg
view tests/test-issue1993.t @ 28261:2ab59ac06b76
chg: detect chg started by chg
Sometimes people may create a symbol link from hg to chg, or write a wrapper
script named hg calling chg. Without $HG and $CHGHG set, this will lead to
chg executes itself causing deadlock. The user will notice chg hangs for some
time and aborts with a timed out message, without knowing the root cause and
how to solve it.
This patch sets a dummy environment variable before executing hg to detect
this situation, and print a fatal message with some possible solutions.
CHGINTERNALMARK is set by chg client to detect the situation that chg is
started by chg. It is temporary and should be dropped to avoid possible
side effects.
author | Jun Wu <quark@fb.com> |
---|---|
date | Fri, 26 Feb 2016 14:13:12 +0000 |
parents | 4591cd6b6794 |
children |
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$ hg init a $ cd a $ echo a > a $ hg ci -Am0 adding a $ echo b > b $ hg ci -Am1 adding b $ hg tag -r0 default warning: tag default conflicts with existing branch name $ hg log changeset: 2:30a83d1e4a1e tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag default for changeset f7b1eb17ad24 changeset: 1:925d80f479bb user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: 1 changeset: 0:f7b1eb17ad24 tag: default user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: 0 $ hg update 'tag(default)' 0 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg parents changeset: 0:f7b1eb17ad24 tag: default user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: 0 $ hg update 'branch(default)' 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg parents changeset: 2:30a83d1e4a1e tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag default for changeset f7b1eb17ad24 $ cd ..