On 4/20/23 21:37, наб wrote:
> Explicitly spell out the ranges involved. The original wording always
> confused me, but it's actually very sane.
>
> Remove "this doesn't change R_NOTBOL & R_NEWLINE" ‒ so does it change
> R_NOTEOL? No. That's weird and confusing.
>
> String largeness doesn't matter, known-lengthness does.
>
> Explicitly spell out the influence on returned matches
> (relative to string, not start of range).
>
> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
> ---
> man3/regex.3 | 29 ++++++++++++++++-------------
> 1 file changed, 16 insertions(+), 13 deletions(-)
>
> diff --git a/man3/regex.3 b/man3/regex.3
> index e3dd72a74..a9bec59a9 100644
> --- a/man3/regex.3
> +++ b/man3/regex.3
> @@ -131,23 +131,26 @@ .SS Matching
> above).
> .TP
> .B REG_STARTEND
> -Use
> -.I pmatch[0]
> -on the input string, starting at byte
> -.I pmatch[0].rm_so
> -and ending before byte
> -.IR pmatch[0].rm_eo .
> +Match
> +.RI [ string " + " pmatch[0].rm_so ", " string " + " pmatch[0].rm_eo )
> +instead of
> +.RI [ string ", " string " + \fBstrlen\fP(" string )).
See man-pages(7):
Expressions, if not written on a separate indented line, should
be specified in italics. Again, the use of nonbreaking spaces
may be appropriate if the expression is inlined with normal
text.
strlen(string) is an expression, not a man page reference, so it should
go in full italics. The + is also part of the expression, so it should
also go in italics. I suggest:
.RI [ "string + pmatch[0].rm_so" , " string + pmatch[0].rm_eo" )
.RI [ string , " string + strlen(string)" ).
> This allows matching embedded NUL bytes
> and avoids a
> .BR strlen (3)
> -on large strings.
> -It does not use
> +on known-length strings.
> +If any matches are returned
> +.RB ( REG_NOSUB
> +wasn't passed to
> +.BR regcomp (),
> +the match succeeded, and
> .I nmatch
> -on input, and does not change
> -.B REG_NOTBOL
> -or
> -.B REG_NEWLINE
> -processing.
> +> 0), they overwrite
> +.I pmatch
> +as usual, and the match offsets remain relative to
> +.IR string
> +(not
> +.IR string " + " pmatch[0].rm_so ).
Similar stuff here.
> This flag is a BSD extension, not present in POSIX.
> .SS Match offsets
> Unless
--
<http://www.alejandro-colomar.es/>
GPG key fingerprint: A9348594CE31283A826FBDD8D57633D441E25BB5
Attachment:
OpenPGP_signature
Description: OpenPGP digital signature
