Document config_args limitations reported in [perl #70912]

diff --git a/Porting/Glossary b/Porting/Glossary
index b810a7f..8a40c32 100644 (file)
--- a/Porting/Glossary
+++ b/Porting/Glossary
@@ -284,6 +284,23 @@ compress (Loc.U):
        This variable is defined but not used by Configure.
        The value is the empty string and is not useful.
 
+config_arg0 (Options.U):
+       This variable contains the string used to invoke the Configure
+       command, as reported by the shell in the $0 variable.
+
+config_argc (Options.U):
+       This variable countains the number of command-line arguments
+       passed to Configure, as reported by the shell in the $# variable.
+       The individual arguments are stored as variables config_argc1,
+       config_argc2, etc.
+
+config_args (Options.U):
+       This variable contains a single string giving the command-line
+       arguments passed to Configure.  Spaces within arguments,
+       quotes, and escaped characters are not correctly preserved.
+       To reconstruct the command line, you must assemble the individual
+       command line pieces, given in config_arg[0-9]*.
+
 contains (contains.U):
        This variable holds the command to do a grep with a proper return
        status.  On most sane systems it is simply "grep".  On insane systems