More invoke.texi patches for manpage generation

[Joseph S. Myers]

This patch makes some more improvements to the output from converting
invoke.texi with texi2pod.pl (again, needing a more recent texi2pod.pl
than is in tree).  It passes "make info" and "make dvi".  OK to
commit?

2000-12-06  Joseph S. Myers  <jsm28@cam.ac.uk>

	* invoke.texi: Use @table @samp instead of @itemize @minus for
	table of language standards.  Fix use of @pxref.  From Zack
	Weinberg.  Also exclude specs documentation from generated
	manpage, and create separate ENVIRONMENT section.

--- invoke.texi.orig	Tue Dec  5 01:38:31 2000
+++ invoke.texi	Tue Dec  5 23:04:33 2000
@@ -858,7 +858,7 @@
 Determine the language standard.  A value for this option must be provided;
 possible values are

-@itemize @minus
+@table @samp
 @item iso9899:1990
 Same as -ansi

@@ -890,7 +890,7 @@
 @item gnu9x
 same as -std=gnu99, deprecated

-@end itemize
+@end table

 Even when this option is not specified, you can still use some of the
 features of newer standards in so far as they do not conflict with
@@ -3592,6 +3592,8 @@
 are processed in order, from left to right.
 @end table

+@c man end
+
 @node Spec Files
 @section Specifying subprocesses and the switches to pass to them
 @cindex Spec Files
@@ -4019,6 +4021,8 @@
 treated as compiler output files, and passed to the linker in their
 proper position among the other output files.

+@c man begin OPTIONS
+
 @node Target Options
 @section Specifying Target Machine and Compiler Version
 @cindex target options
@@ -7742,8 +7746,8 @@
 @code{__asm__} keywords in functions with memory checking enabled.  GNU
 CC cannot understand what the @code{asm} statement may do, and therefore
 cannot generate the appropriate code, so it will reject it.  However, if
-you specify the function attribute @code{no_check_memory_usage} (see
-@pxref{Function Attributes}, GNU CC will disable memory checking within a
+you specify the function attribute @code{no_check_memory_usage}
+(@pxref{Function Attributes}), GNU CC will disable memory checking within a
 function; you may use @code{asm} statements inside such functions.  You
 may have an inline expansion of a non-checked function within a checked
 function; in that case GNU CC will not generate checks for the inlined
@@ -7870,9 +7874,13 @@
 option, and that not all targets provide complete support for it.
 @end table

+@c man end
+
 @node Environment Variables
 @section Environment Variables Affecting GCC
 @cindex environment variables
+
+@c man begin ENVIRONMENT

 This section describes several environment variables that affect how GCC
 operates.  Some of them work by specifying directories or prefixes to use

-- 
Joseph S. Myers
jsm28@cam.ac.uk