bug#26139: [PATCH] doc: document the option delimiter '--'

[Bernhard Voelker]

* doc/grep.texi (Other options): Do the above.

Reported in
https://lists.opensuse.org/opensuse/2017-03/msg00411.html
---
 doc/grep.texi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/grep.texi b/doc/grep.texi
index 077c05f..2bc3435 100644
--- a/doc/grep.texi
+++ b/doc/grep.texi
@@ -730,6 +730,14 @@ directory, recursively, following all symbolic links.
 
 @table @option
 
address@hidden --
address@hidden --
address@hidden option delimiter
+Delimit the option list.  Later arguments, if any, are treated as
+operands even if they begin with @samp{-}.  For example, @samp{grep PAT --
+-file1 file2} searches for the pattern PAT in the files named @file{-file1}
+and @file{file2}.
+
 @item --line-buffered
 @opindex --line-buffered
 @cindex line buffering
-- 
2.12.0