docs: Tru64/OSF sh treats read as special builtin

* doc/autoconf.texi (Limitations of Builtins): read may exit
upon unreadable or non-existent file with Tru64/OSF 5.1 sh.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>

diff --git a/ChangeLog b/ChangeLog
index 4c8fd490fea5d64964df79cc6b9b833020cb04e1..c314e63e41f1718655dd08d23dd30b17940c1a64 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2011-01-17  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+       docs: Tru64/OSF sh treats read as special builtin
+       * doc/autoconf.texi (Limitations of Builtins): read may exit
+       upon unreadable or non-existent file with Tru64/OSF 5.1 sh.
+
 2011-01-12  Eric Blake  <eblake@redhat.com>
 
        docs: fix description of m4_ifval

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 9f5494eee4be3757030c3541c0027b3921671d3a..4cb3a8c6b441d4a7a0a09a45da43927558fb4c00 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -17342,7 +17342,9 @@ Also please see the discussion of the @command{cd} command.
 @c -----------------
 @prindex @command{read}
 No options are portable, not even support @option{-r} (Solaris
-@command{/bin/sh} for example).
+@command{/bin/sh} for example).  Tru64/OSF 5.1 @command{sh} treats
+@command{read} as a special built-in, so it may exit if input is
+redirected from a non-existent or unreadable file.
 
 
 @anchor{set}