URL:
  <https://savannah.gnu.org/bugs/?65227>

                 Summary: [grog] mishandles options containing 'C'
                   Group: GNU roff
               Submitter: gbranden
               Submitted: Tue 30 Jan 2024 03:05:02 AM UTC
                Category: Utilities
                Severity: 3 - Normal
              Item Group: Incorrect behaviour
                  Status: In Progress
                 Privacy: Public
             Assigned to: gbranden
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Tue 30 Jan 2024 03:05:02 AM UTC By: G. Branden Robinson <gbranden>
Using _grog_ to view the _groff_mom_(7) page on my system produced a nasty
surprise of an ill-formatted documented.

Investigation revealed that that _grog_ inferred use of the _me_(7) macro
package for this _man_(7) document.

Further investigation revealed that my passage of the `-rCHECKSTYLE=4`
argument was causing the problem.

_grog_ thought it was supposed to be interpreting the document in
compatibility mode, which was incorrect.

The problem is a too-loose regex.


    # Our do_line() needs to know if it should do compatibility parsing.
    $use_compatibility_mode = 1 if ($arg =~ /C/);


This of course matches a "C" anywhere in $arg; Perl doesn't know that it's
looking at an option cluster.

I'm not marking this as a regression from 1.22.4 because that version's _grog_
didn't perform well with my (script-constructed) command line either.


$ /usr/bin/grog -Tutf8 -b -ww -P-i -rU1 -rCHECKSTYLE=4 -rPO=19n -rLL=80n
/home/branden/groff-HEAD/share/man/man7/groff_mom.7
groff -b -w -w -r -U1 -T utf8 -man
/home/branden/groff-HEAD/share/man/man7/groff_mom.7


Turning on unsafe mode isn't actually a brilliant move there.









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