From 1ef73ccec2927bf811545c08c0f5fe66d0780cff Mon Sep 17 00:00:00 2001
From: Ray Lai <ray@cvs.openbsd.org>
Date: Wed, 8 Aug 2007 07:20:46 +0000
Subject: Show how to use strcspn(3) to trim newlines.

OK jmc and millert.
---
 lib/libc/string/strcspn.3 | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

(limited to 'lib/libc/string/strcspn.3')

diff --git a/lib/libc/string/strcspn.3 b/lib/libc/string/strcspn.3
index c5d9e562d25..21c727344dd 100644
--- a/lib/libc/string/strcspn.3
+++ b/lib/libc/string/strcspn.3
@@ -29,9 +29,9 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: strcspn.3,v 1.8 2007/05/31 19:19:32 jmc Exp $
+.\"	$OpenBSD: strcspn.3,v 1.9 2007/08/08 07:20:45 ray Exp $
 .\"
-.Dd $Mdocdate: May 31 2007 $
+.Dd $Mdocdate: August 8 2007 $
 .Dt STRCSPN 3
 .Os
 .Sh NAME
@@ -72,6 +72,18 @@ size_t span;
 
 span = strcspn(s, charset);
 .Ed
+.Pp
+The following removes the first (if any) newline character from string
+.Fa line .
+This is useful for trimming the newline after a
+.Xr fgets 3
+call.
+.Bd -literal -offset indent
+char line[BUFSIZ];
+
+if (fgets(line, sizeof(line), fp) != NULL)
+	line[strcspn(line, "\en")] = '\e0';
+.Ed
 .Sh SEE ALSO
 .Xr memchr 3 ,
 .Xr strchr 3 ,
-- 
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