From: Joey Hess <joey@kodama.kitenet.net>
Date: Mon, 12 May 2008 20:04:36 +0000 (-0400)
Subject: ifne: If no command is specified, print usage information.
X-Git-Tag: 0.30~1
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99e7bc2550ca8fc57af19410e28958e46a2d6f15;p=moreutils

ifne: If no command is specified, print usage information.
---

diff --git a/debian/changelog b/debian/changelog
index e617044..6e7b813 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -3,6 +3,8 @@ moreutils (0.30) UNRELEASED; urgency=low
   * debhelper v7; rules file minimisation
   * Use DESTDIR instead of PREFIX.
   * Add a DOCBOOK2XMAN setting. (Greg KH)
+  * ifne: Add -n which makes it run the command if stdin is empty.
+  * ifne: If no command is specified, print usage information.
 
  -- Joey Hess <joeyh@debian.org>  Sat, 26 Apr 2008 19:23:10 -0400
 
diff --git a/ifne.c b/ifne.c
index a7abd21..d8ecea9 100644
--- a/ifne.c
+++ b/ifne.c
@@ -50,8 +50,8 @@ int main(int argc, char **argv) {
 	FILE *outf;
 
 	if ((argc < 2) || ((argc == 2) && streq(argv[1], "-n"))) {
-		/* Noop */
-		return EXIT_SUCCESS;
+		fprintf(stderr, "Usage: ifne [-n] command [args]\n");
+		return EXIT_FAILURE;
 	}
 
 	if (streq(argv[1], "-n")) {
diff --git a/ifne.docbook b/ifne.docbook
index 38e3889..41fa9ab 100644
--- a/ifne.docbook
+++ b/ifne.docbook
@@ -67,6 +67,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 				<term><option>-n</option></term>
 				<listitem>
 					<para>Reverse operation. Run the command if the standard input is empty.</para>
+					<para>Note that if the standard input is not empty, it is passed through ifne
+					in this case.</para>
 				</listitem>
 			</varlistentry>
 		</variablelist>