improve regexec_flags() API documentation

In the API, rename the 'screamer' arg to be 'sv' instead;
update the description of the functions args;
improve the documentation of the REXEC_* flags for the 'flags' arg.

1 files changed, 1 insertions, 1 deletions

diff --git a/regexec.c b/regexec.c
index 4a350fb090..5f142a0332 100644
--- a/regexec.c
+++ b/regexec.c
@@ -2211,7 +2211,7 @@ Perl_regexec_flags(pTHX_ REGEXP * const rx, char *stringarg, char *strend,
  *            itself is accessed via the pointers above */
 /* data:      May be used for some additional optimizations.
               Currently unused. */
-/* nosave:    For optimizations. */
+/* flags:     For optimizations. See REXEC_* in regexp.h */
 
 {
     dVAR;