The wording was incorrect:
It stated that 'eflags' may be the OR of one or two of those two flags,
but then a third flag was documented
(which according to the previous wording could not be used?!).
Moreover, the wording also disallowed using 0 (i.e., no flags at all),
which POSIX specifically allows;
I tested the function with no flags and it worked fine for me,
so I guess it was a problem with the documentation,
and not with the implementation itself.
POSIX ref: https://pubs.opengroup.org/onlinepubs/
9699919799/
Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
.I eflags
may be the
.RB bitwise- or
-of one or both of
-.B REG_NOTBOL
-and
-.B REG_NOTEOL
-which cause changes in matching behavior described below.
+of zero or more of the following flags:
.TP
.B REG_NOTBOL
The match-beginning-of-line operator always fails to match (but see the