hg grep - search for a pattern in specified files

       Search  the working directory or revision history for a regular expression in the specified files for the
       entire repository.

       By default, grep searches the repository files in the working directory and prints  the  files  where  it
       finds a match. To specify historical revisions instead of the working directory, use the --rev flag.

       To search instead historical revision differences 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 --diff flag.

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

       If  no  FILEs  are  specified  and  the --rev flag isn't supplied, all files in the working directory are
       searched. When using the --rev flag and specifying FILEs, use the --follow argument to  also  follow  the
       specified FILEs across renames and copies.

       Template:

       The  following keywords are supported in addition to the common template keywords and functions. See also
       hghelptemplates.

       change String. Character denoting insertion + or removal -.  Available if --diff is specified.

       lineno Integer. Line number of the match.

       path   String. Repository-absolute path of the file.

       texts  List of text chunks.

              And each entry of {texts} provides the following sub-keywords.

       matched
              Boolean. True if the chunk matches the specified pattern.

       text   String. Chunk content.

              See hghelptemplates.operators for the list expansion syntax.

              Returns 0 if a match is found, 1 otherwise.

       hg grep - search for a pattern in specified files

-0,--print0
              end fields with NUL

       --all  an alias to --diff (DEPRECATED)

       --diff search revision differences for when the pattern was added or removed

       -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[+]>
              search files changed within revision range

       --all-files
              include all files in the changeset while grepping (DEPRECATED)

       -u,--user
              list the author (long with -v)

       -d,--date
              list the date (short with -q)

       -T,--template<TEMPLATE>
              display with template

       -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

                                                                                                        HG(GREP)

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