From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 21 Jan 2005 19:31:51 +0000 (+0000)
Subject: (Limitations of Builtins): Clarify that
X-Git-Tag: AUTOCONF-2.59c~494
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2741f70c79cd74dee38a6bf359d5478f5e2425d;p=thirdparty%2Fautoconf.git

(Limitations of Builtins): Clarify that
"if test -d foo; ..." is portable.  Suggested by Stepan Kasal.
---

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 921d4a8e4..8aa2bfc29 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -11082,8 +11082,9 @@ operators; consequently, Posix does not specify them, so using them
 is nonportable.  If you combine @samp{&&} and @samp{||} in the same
 statement, keep in mind that they have equal precedence.
 
-You may use @samp{!} with @command{test}, but not with @command{if}:
-@samp{test ! -r foo || exit 1}.
+It is safe to use @samp{!} as a @command{test} operator.  For example,
+@samp{if test ! -d foo; @dots{}} is portable even though @samp{if ! test
+-d foo; @dots{}} is not.
 
 
 @item @command{test} (files)