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

search revision history for a pattern in specified files

    Search revision history for a regular expression in the specified
    files or the entire project.

    By default, grep prints the most recent revision number for each
    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.

    PATTERN can be any Python (roughly Perl-compatible) regular
    expression.

    If no FILEs are specified (and -f/--follow isn't set), all files in
    the repository are searched, including those that don't exist in the
    current branch or have been deleted in a prior changeset.

    Returns 0 if a match is found, 1 otherwise.
    

options ([+] can be repeated):

 == ===================== ===================================================================
 -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)                                      
 -T --template TEMPLATE   display with template (EXPERIMENTAL)                               
 -I --include PATTERN [+] include names matching the given patterns                          
 -X --exclude PATTERN [+] exclude names matching the given patterns                          
 == ===================== ===================================================================

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)
 == =================== ==================================================================