From 3f30fe74216802003df9f18b2dfe7ccddcb006e5 Mon Sep 17 00:00:00 2001
From: Bo Peng <bpeng@lyx.org>
Date: Mon, 26 Nov 2007 15:45:54 +0000
Subject: [PATCH] If there exists a local layout file, use the local copy
 instead of the system one.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@21800 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/BufferParams.cpp | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/BufferParams.cpp b/src/BufferParams.cpp
index a713f84c52..8c30839cd7 100644
--- a/src/BufferParams.cpp
+++ b/src/BufferParams.cpp
@@ -469,20 +469,24 @@ string const BufferParams::readToken(Lexer & lex, string const & token)
 	if (token == "\\textclass") {
 		lex.next();
 		string const classname = lex.getString();
-		pair<bool, lyx::textclass_type> pp =
-			textclasslist.numberOfClass(classname);
-		if (pp.first) {
+		// if there exists a local layout file, ignore the system one
+		// NOTE: in this case, the textclass (.cls file) is assumed to be available.
+		pair<bool, lyx::textclass_type> pp = textclasslist.addTextClass(classname, filepath);
+		if (pp.first)
 			setBaseClass(pp.second);
-		} else {
-			// if text class does not exist, try to load it from filepath
-			pp = textclasslist.addTextClass(classname, filepath);
-			if (pp.first) {
+		else {
+			pp = textclasslist.numberOfClass(classname);
+			if (pp.first)
 				setBaseClass(pp.second);
-			} else {
+			else {
+				// a warning will be given for unknown class
 				setBaseClass(defaultTextclass());
 				return classname;
 			}
 		}
+		// FIXME: this warning will be given even if there exists a local .cls
+		// file. Even worse, the .lyx file can not be compiled or exported
+		// because the textclass is marked as unavilable.
 		if (!getTextClass().isTeXClassAvailable()) {
 			docstring const msg =
 				bformat(_("The layout file requested by this document,\n"