Use FENDNULL() instead of duplicate, locally defined, empty().

[nmh] / test / README

diff --git a/test/README b/test/README
index 7bf605b547b62036b67609db31ba762b0aecd7c6..e9dae928a1f1a9b0b31419fc0255c51f476f33d6 100644 (file)
--- a/test/README
+++ b/test/README
@@ -71,6 +71,17 @@ in the test scripts.  In particular:
 - Avoid depending on the exact format of output from system (non-nmh)
   programs.
 
 - Avoid depending on the exact format of output from system (non-nmh)
   programs.
 

+- Use octal instead of hex (\x) bytes in printf(1) formats, because hex
+  is not supported by POSIX printf.
+
+The Heirloom Bourne Shell, http://heirloom.sourceforge.net/sh.html,
+catches many non-portable shell constructs, such as $(), $(()), !, and
+assignment in export statements.
+

 checkbashisms, available at http://sourceforge.net/projects/checkbaskisms/,
 might help some catch problems.  Though it misses all of the troublesome
 constructs, except for assignment in an export statement, listed above.
 checkbashisms, available at http://sourceforge.net/projects/checkbaskisms/,
 might help some catch problems.  Though it misses all of the troublesome
 constructs, except for assignment in an export statement, listed above.

+
+The "Portable Shell" section of the Autoconf info manual has a wealth
+of tips for avoiding portability problems in shell scripts.  It might
+be available by entering:  info autoconf portable.