A Few Utilities for Checking and Listing Tags in Source Codes

- chk_tags.x (created from 'make chk_tags.x')

 A utility to check validity of @@<tags> in source codes.
 The tool can also be used to fix issues when possible.
 This tool is used by script '../sources/check_tags'.

 Usage: chk_tags.x [-options] filename ...
 options -
  -sc      ; strictly check for "@@<tag>:"
  -vtag    ; check version tags in tex file
  -clen<n> ; check line length over a limit (def <n>=75)
  -fix     ; apply tag fix if needed (to <filename>_fix)
  -list    ; list tags (with -vtag to list version tags)

- get_tags

 Generate a source template with proper source tags.

 Usage: gen_tags [-tags] [-<tag_name> <value>...] [<filename>]
 options -
   -tags                ; list supported tags and values
   -<tag_name> <value>  ; specify a tag and its value
   <filename>           ; give filename in form of <name.seqno.ext>

 Any of the tag information may be entered at the prompt later.
 If <filename> is not given, construct it from <name> and <type>.
 For an existing file with tags, print tags in the file;
 for an existing file without tags, add tags to the file;
 otherwise, create a file with new tags.

- list_tags

 List tag information in source codes.  This tool is used by make
 in the top-level directory to generate generated-include.tex.

 Usage: list_tags [options] [-h] <files>
 options -
  -list        ; list tags in csv format
  -vtag        ; create version tag info for use in latex file
  -env|-fenv   ; print env tag values
  -clen=<len>  ; check line length, default <len>=75
 Multiple files may be specified