Many changes to the parsing capabilities of etags.

The -C or -c++ options are now mostly obsolete.
Can delve at arbitrary deeps into structures of C-like languages.

etc/NEWS

@@ -1460,6 +1460,12 @@ declarations when given the --declarations option.
 *** In C++, tags are created for "operator".  The tags have the form
 "operator+", without spaces between the keyword and the operator.
 
+*** You shouldn't generally need any more the -C or -c++ option: etags
+automatically detects a C++ file when it meets the `class' keyword.
+
+*** Etags now is able to delve at arbitrary deeps into nested structures in
+C-like languages.  Previously, it was limited to one or two brace levels.
+
 *** New language Ada: tags are functions, procedures, packages, tasks, and
 types.
 

lib-src/ChangeLog

+2001-01-28  Francesco Potorti`  <pot@gnu.org>
+
+	* etags.c: Be capable to parse nested struct-like structures.
+	(structdef, structtag): Struct state machine revisited.
+	(struct tok): Revisited.
+	(cstack, nestlev, instruct): New struct and macros.
+	(pushclass_above, popclass_above, write_classname): New functions
+	for dealing with nested class names, inspired by Mykola Dzyuba.
+	(consider_token, make_C_tag, C_entries): Many changes for dealing
+	with arbitrarily nested structures.
+	(etags_getcwd): #if MSDOS, not #ifdef MSDOS!
+	(C_entries): Consider templates in C++.
+	(sym_type): New constant st_C_class for detecting "class" also in
+	C mode.
+	(C_AUTO): New macro for automatic detection of C++.
+	(consider_token): Automatic set C++ mode.
+	(C_entries): New security check for yacc.
+	(print_language_names, print_help): Mention the autodetect
+	feature, do not show help for the -C option, now mostly	useless.
+	(C_entries): Tag C++ forward declarations if --declarations.
+	(C_entries): Don't be fooled by things like XDEFUN.
+	(consider_token): Discard asm pseudo function.
+
 2001-01-27  Eli Zaretskii  <eliz@is.elta.co.il>
 
 	* etags.c: Add a coding: tag.
 
 2001-01-26  Gerd Moellmann  <gerd@gnu.org>
 
-	* ebrowse.c (matching_regexp_buffer, matching_regexp_end_buf): 
+	* ebrowse.c (matching_regexp_buffer, matching_regexp_end_buf):
 	New variables.
 	(matching_regexp): Use them instead of static variables in
 	function scope.

lib-src/etags.1

@@ -16,7 +16,7 @@ etags, ctags \- generate tag file for Emacs, vi
 .if n .br
 .B [\|\-o \fItagfile\fP\|] [\|\-r \fIregexp\fP\|]
 .br
-.B [\|\-\-append\|] [\|\-\-c++\|] [\|\-\-no\-defines\|]
+.B [\|\-\-append\|] [\|\-\-no\-defines\|]
 .B [\|\-\-no\-globals\|] [\|\-\-include=\fIfile\fP\|]
 .B [\|\-\-ignore\-indentation\|] [\|\-\-language=\fIlanguage\fP\|]
 .B [\|\-\-members\|] [\|\-\-output=\fItagfile\fP\|]
@@ -29,7 +29,7 @@ etags, ctags \- generate tag file for Emacs, vi
 .if n .br
 .B [\|\-o \fItagfile\fP\|] [\|\-r \fIregexp\fP\|]
 .br
-.B [\|\-\-append\|] [\|\-\-backward\-search\|] [\|\-\-c++\|]
+.B [\|\-\-append\|] [\|\-\-backward\-search\|]
 .B [\|\-\-cxref\|] [\|\-\-defines\|] [\|\-\-forward\-search\|]
 .B [\|\-\-globals\|] [\|\-\-ignore\-indentation\|]
 .B [\|\-\-language=\fIlanguage\fP\|] [\|\-\-members\|]
@@ -81,11 +81,6 @@ The default is to use the delimiter `\|\fB/\fP\|', to search \fIforwards\fP
 through files.
 Only \fBctags\fP accepts this option.
 .TP
-.B \-C, \-\-c++
-Treat files with `\|.c\|' and `\|.h\|' extensions as C++ code, not C
-code.  Files with `\|.C\|', `\|.H\|', `\|.cxx\|', `\|.hxx\|', or
-`\|.cc\|' extensions are always assumed to be C++ code.
-.TP
 .B \-\-declarations
 In C and derived languages, create tags for function declarations,
 and create tags for extern variables unless \-\-no\-globals is used.