hg grep [OPTION]... PATTERN [FILE]...

search for a pattern in specified files and revisions

    Search revisions of files for a regular expression.

    This command behaves differently than Unix grep. It only accepts
    Python/Perl regexps. It searches repository history, not the working
    directory. It always prints the revision number in which a match appears.

    By default, grep only prints output for the first revision of a file in
    which it finds a match. To get it to print every revision that contains a
    change in match status ("-" for a match that becomes a non-match, or "+"
    for a non-match that becomes a match), use the --all flag.

    Returns 0 if a match is found, 1 otherwise.

options:

 -0 --print0              end fields with NUL
    --all                 print all revisions that match
 -a --text                treat all files as text
 -f --follow              follow changeset history, or file history across
                          copies and renames
 -i --ignore-case         ignore case when matching
 -l --files-with-matches  print only filenames and revisions that match
 -n --line-number         print matching line numbers
 -r --rev REV [+]         only search files changed within revision range
 -u --user                list the author (long with -v)
 -d --date                list the date (short with -q)
 -I --include PATTERN [+] include names matching the given patterns
 -X --exclude PATTERN [+] exclude names matching the given patterns

[+] marked option can be specified multiple times

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: 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

[+] marked option can be specified multiple times