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 revisions.bisect` for more about the `bisect()` predicate.

    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 ([+] can be repeated):

 == =================== ==================================================================
 -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                                          
    --color TYPE        when to colorize (boolean, always, auto, never, or debug)         
    --config CONFIG [+] set/override config option (use 'section.name=value')             
    --debug             enable debugging output                                           
    --debugger          start debugger                                                    
    --encoding ENCODE   set the charset encoding (default: ascii)                         
    --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                                        
    --pager TYPE        when to paginate (boolean, always, auto, or never) (default: auto)
 == =================== ==================================================================