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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/107960] New: opt-gather.awk seems to ignore lines
 lines that start with whitespace
Date: Sun, 04 Dec 2022 01:02:41 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: bootstrap
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: documentation
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107960

            Bug ID: 107960
           Summary: opt-gather.awk seems to ignore lines lines that start
                    with whitespace
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: documentation
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

echo -e "aaa\n a\n  a\na" | awk -f opt-gather.awk > t.txt

and then look at the result of t.txt and notice that only aaa^\a is in the
file.

No error message happens either.

The code in the old opts.sh (which is still the awk script) was broken too.


The problem is here:
/^[ \t]*(;|$)/  { flag =3D 0; next }
/^[^ \t]/       { if (flag =3D=3D 0) {

Notice how that the pattern is matching all lines that don't start with whi=
te
space.

Also notice how a comment is considered a record seperator too.=20

Neither of this is documented either.

The documentation for comments is:
Comments may appear on their own line anywhere within the file and are prec=
eded
by semicolons.=20

Which to mean it in the middle of a record but the code does not allow that.
Have the ability of the "white space" in the front being a comment inside t=
he
record is a nice feature but I do think it should be documented though.=