eliminate RXf_ANCH_SINGLE

This macro defines two flag bits:

    #define PREGf_ANCH_SINGLE         (PREGf_ANCH_SBOL|PREGf_ANCH_GPOS)

but is only used twice in core (and not on CPAN),
don't really add any value, but increases cognitive complexity.

1 files changed, 1 insertions, 1 deletions

diff --git a/regcomp.c b/regcomp.c
index cfc46b1d10..a6572523f8 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -6957,7 +6957,7 @@ reStudy:
 	    r->check_substr = r->anchored_substr;
 	    r->check_utf8 = r->anchored_utf8;
 	    r->check_offset_min = r->check_offset_max = r->anchored_offset;
-            if (r->intflags & PREGf_ANCH_SINGLE)
+            if (r->intflags & (PREGf_ANCH_SBOL|PREGf_ANCH_GPOS))
                 r->intflags |= PREGf_NOSCAN;
 	}
 	else {