Re: standards/38127: awk's: regexps should treat { and } as special, but as regular characters

[Aleksey Cheusov <cheusov%tut.by@localhost>]

How about the following patch?
It is worse than standard {n,m} but much better than nothing.

Index: b.c
===================================================================
RCS file: /pub/NetBSD-CVS/src/dist/nawk/b.c,v
retrieving revision 1.12
diff -u -r1.12 b.c
--- b.c 25 Jul 2006 20:52:57 -0000      1.12
+++ b.c 20 Jun 2008 21:05:39 -0000
@@ -789,6 +789,11 @@
        case '\\':
                rlxval = quoted(&prestr);
                return CHAR;
+       case '{':
+       case '}':
+               WARNING ("warning: character `%c' treated as plain `%c'", c, c);
+               rlxval = c;
+               return CHAR;
        default:
                rlxval = c;
                return CHAR;

Result:

    0 ~>echo '{}' | /usr/bin/awk '/{}/'
    {}
    0 ~>echo '{}' | /usr/bin/awk '/[{][}]/'
    {}




    0 ~>echo '{}' | /srv/src/usr.bin/awk/awk '/{}/'
    /srv/src/usr.bin/awk/awk: warning: character `{' treated as plain `{'
    source line number 1
    context is
    >>> /{}/ <<<
    /srv/src/usr.bin/awk/awk: warning: character `}' treated as plain `}'
    source line number 1
    {}
    0 ~>echo '{}' | /srv/src/usr.bin/awk/awk '/[{][}]/'
    {}
    0 ~>

-- 
Best regards, Aleksey Cheusov.