Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx> --- man3/regex.3 | 36 ++++++++++++++++-------------------- 1 file changed, 16 insertions(+), 20 deletions(-) diff --git a/man3/regex.3 b/man3/regex.3 index d91acc19d..069cc6388 100644 --- a/man3/regex.3 +++ b/man3/regex.3 @@ -210,27 +210,23 @@ .SS Error reporting .BR regexec () into error message strings. .PP -.BR regerror () -is passed the error code, -.IR errcode , -the pattern buffer, -.IR preg , -a pointer to a character string buffer, -.IR errbuf , -and the size of the string buffer, -.IR errbuf_size . -It returns the size of the -.I errbuf -required to contain the null-terminated error message string. -If both -.I errbuf -and +If +.I preg +isn't a null pointer, +.I errcode +must be the latest error returned from an operation on +.IR preg . +.PP +If +.I errbuf_size +is +.BR 0 , +the size of the required buffer is returned. +Otherwise, up to .I errbuf_size -are nonzero, -.I errbuf -is filled in with the first -.I "errbuf_size \- 1" -characters of the error message and a terminating null byte (\[aq]\e0\[aq]). +bytes are copied to +.IR errbuf ; +the error string is always null-terminated, and truncated to fit. .SS Freeing .BR regfree () deinitializes the pattern buffer at -- 2.30.2
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