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-rw-r--r--doc/grep.in.111
1 files changed, 8 insertions, 3 deletions
diff --git a/doc/grep.in.1 b/doc/grep.in.1
index a3829660..a91b2a6f 100644
--- a/doc/grep.in.1
+++ b/doc/grep.in.1
@@ -1333,13 +1333,18 @@ The following example outputs the location and contents of any line
containing \*(lqf\*(rq and ending in \*(lq.c\*(rq,
within all files in the current directory whose names
contain \*(lqg\*(rq and end in \*(lq.h\*(rq.
-The command also searches the empty file /dev/null,
-so that file names are displayed
+The
+.B \-n
+option outputs line numbers, the
+.B \-\-
+argument treats expansions of \*(lq*g*.h\*(rq starting with \*(lq\-\*(rq
+as file names not options,
+and the empty file /dev/null causes file names to be output
even if only one file name happens to be of the form \*(lq*g*.h\*(rq.
.PP
.in +2n
.EX
-$ \fBgrep\fP \-n 'f.*\e.c$' *g*.h /dev/null
+$ \fBgrep\fP \-n \-\- 'f.*\e.c$' *g*.h /dev/null
argmatch.h:1:/* definitions and prototypes for argmatch.c
.EE
.in