X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=doc%2Fexpressions.texi;h=7226116bd13e8897c29c2dbf120acf913ca17857;hb=8b585b7a6ae9d1a90386d56e3ce484cf8204743a;hp=7180bf8793ea24a3c0907c13d70eb3ce1e7ef87e;hpb=0df9cdd3df66caf4353128feff3008289cda8115;p=pspp

diff --git a/doc/expressions.texi b/doc/expressions.texi
index 7180bf8793..7226116bd1 100644
--- a/doc/expressions.texi
+++ b/doc/expressions.texi
@@ -621,7 +621,7 @@ format for @var{format}, system-missing is returned.
 @end deftypefn
 
 @cindex strings, searching backwards
-@deftypefn {Function} {} RINDEX (@var{string}, @var{format})
+@deftypefn {Function} {} RINDEX (@var{haystack}, @var{needle})
 Returns a positive integer indicating the position of the last
 occurrence of @var{needle} in @var{haystack}.  Returns 0 if
 @var{haystack} does not contain @var{needle}.  Returns system-missing if
@@ -634,7 +634,7 @@ Searches @var{haystack} for the last occurrence of each part, and
 returns the largest value.  Returns 0 if @var{haystack} does not contain
 any part in @var{needle}.  It is an error if @var{needle_len} does not
 evenly divide the length of @var{needle}.  Returns system-missing
-if @var{needle} is an empty string.
+if @var{needle} is an empty string or if needle_len is less than 1.
 @end deftypefn
 
 @cindex padding strings