From: Pavel Roskin <proski@gnu.org>
Date: Wed, 20 Sep 2000 10:45:10 +0000 (+0000)
Subject:         * libm4.m4 (m4_ifvanl): Don't output a newline for empty
X-Git-Tag: autoconf-2.50~620
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=5eda671dae2174f8f8b03c966887294699ec7af1;p=thirdparty%2Fautoconf.git

    * libm4.m4 (m4_ifvanl): Don't output a newline for empty
        arguments
---

diff --git a/ChangeLog b/ChangeLog
index 2aa4c43ed..f7a131741 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2000-09-20  Pavel Roskin  <proski@gnu.org>
+
+	* libm4.m4 (m4_ifvanl): Don't output a newline for empty
+	arguments
+
 2000-09-19  Akim Demaille  <akim@epita.fr>
 
 	* tests/atspecific.m4 (AT_TEST_MACRO): Rename as...
diff --git a/libm4.m4 b/libm4.m4
index c125eed04..1a46c28b3 100644
--- a/libm4.m4
+++ b/libm4.m4
@@ -184,12 +184,13 @@ define([ifval], [ifelse([$1], [], [$3], [$2])])
 
 # m4_ifvanl(COND, [IF-TRUE], [IF-FALSE])
 # --------------------------------------
-# Same as `ifval', but add an extra newline to IF-TRUE or IF-FALSE.
+# Same as `ifval', but add an extra newline to IF-TRUE or IF-FALSE
+# unless that argument is empty.
 define([m4_ifvanl], [ifelse([$1], [],
-[$3
-],
-[$2
-])])
+[ifelse([$3], [], [], [$3
+])],
+[ifelse([$2], [], [], [$2
+])])])
 
 
 # ifset(MACRO, [IF-TRUE], [IF-FALSE])