hg bisect [-gbsr] [-U] [-c CMD] [REV]
subdivision search of changesets
This command helps to find changesets which introduce problems. To
use, mark the earliest changeset you know exhibits the problem as
bad, then mark the latest changeset which is free from the problem
as good. Bisect will update your working directory to a revision
for testing (unless the -U/--noupdate option is specified). Once
you have performed tests, mark the working directory as good or
bad, and bisect will either update to another candidate changeset
or announce that it has found the bad revision.
As a shortcut, you can also use the revision argument to mark a
revision as good or bad without checking it out first.
If you supply a command, it will be used for automatic bisection.
The environment variable HG_NODE will contain the ID of the
changeset being tested. The exit status of the command will be
used to mark revisions as good or bad: status 0 means good, 125
means to skip the revision, 127 (command not found) will abort the
bisection, and any other non-zero exit status means the revision
is bad.
.. container:: verbose
Some examples:
- start a bisection with known bad revision 34, and good revision 12::
hg bisect --bad 34
hg bisect --good 12
- advance the current bisection by marking current revision as good or
bad::
hg bisect --good
hg bisect --bad
- mark the current revision, or a known revision, to be skipped (e.g. if
that revision is not usable because of another issue)::
hg bisect --skip
hg bisect --skip 23
- skip all revisions that do not touch directories ``foo`` or ``bar``::
hg bisect --skip "!( file('path:foo') & file('path:bar') )"
- forget the current bisection::
hg bisect --reset
- use 'make && make tests' to automatically find the first broken
revision::
hg bisect --reset
hg bisect --bad 34
hg bisect --good 12
hg bisect --command "make && make tests"
- see all changesets whose states are already known in the current
bisection::
hg log -r "bisect(pruned)"
- see the changeset currently being bisected (especially useful
if running with -U/--noupdate)::
hg log -r "bisect(current)"
- see all changesets that took part in the current bisection::
hg log -r "bisect(range)"
- you can even get a nice graph::
hg log --graph -r "bisect(range)"
See :hg:`help revsets` for more about the `bisect()` keyword.
Returns 0 on success.
options:
== ============= ====================================
-r --reset reset bisect state
-g --good mark changeset good
-b --bad mark changeset bad
-s --skip skip testing changeset
-e --extend extend the bisect range
-c --command CMD use command to check changeset state
-U --noupdate do not update to target
== ============= ====================================
global options:
== =================== ==================================================================
-R --repository REPO repository root directory or name of overlay bundle file
--cwd DIR change working directory
-y --noninteractive do not prompt, automatically pick the first choice for all prompts
-q --quiet suppress output
-v --verbose enable additional output
--config CONFIG [+] set/override config option (use 'section.name=value')
--debug enable debugging output
--debugger start debugger
--encoding ENCODE set the charset encoding (default: UTF-8)
--encodingmode MODE set the charset encoding mode (default: strict)
--traceback always print a traceback on exception
--time time how long the command takes
--profile print command execution profile
--version output version information and exit
-h --help display help and exit
--hidden consider hidden changesets
== =================== ==================================================================
[+] marked option can be specified multiple times