From d17f1a298a30633a8376dfd729c3ada9f1a6a5a2 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=BCrgen=20Spitzm=C3=BCller?= <spitz@lyx.org>
Date: Mon, 15 Sep 2008 14:19:00 +0000
Subject: [PATCH] * src/InsetIndex.cpp: 	- fix LaTeX output with
 unrepresentable characters in current encoding (bug 5022).

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@26412 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/insets/InsetIndex.cpp | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/insets/InsetIndex.cpp b/src/insets/InsetIndex.cpp
index 00da6df8be..fa13bdc0f5 100644
--- a/src/insets/InsetIndex.cpp
+++ b/src/insets/InsetIndex.cpp
@@ -13,6 +13,7 @@
 
 #include "Buffer.h"
 #include "DispatchResult.h"
+#include "Encoding.h"
 #include "FuncRequest.h"
 #include "FuncStatus.h"
 #include "LaTeXFeatures.h"
@@ -25,6 +26,8 @@
 #include "support/gettext.h"
 #include "support/lstrings.h"
 
+#include "frontends/alert.h"
+
 #include <ostream>
 
 using namespace std;
@@ -106,10 +109,31 @@ int InsetIndex::latex(odocstream & os,
 		if (contains(*it, '\\') && !contains(*it, '@')) {
 			// Plaintext might return nothing (e.g. for ERTs)
 			docstring const spart = 
-				(it2 < levels_plain.end() && !(*it2).empty()) ? *it2 : *it;
+				(it2 < levels_plain.end() && !(*it2).empty())
+				? *it2 : *it;
+			// Now we need to validate that all characters in
+			// the sorting part are representable in the current
+			// encoding. If not try the LaTeX macro which might
+			// or might not be a good choice, and issue a warning.
+			docstring spart2;
+			for (int n = 0; n < spart.size(); ++n) {
+				try {
+					spart2 += runparams.encoding->latexChar(spart[n]);
+				} catch (EncodingException & /* e */) {
+					LYXERR0("Uncodable character in index entry. Sorting might be wrong!");
+				}
+			}
+			if (spart != spart2 && !runparams.dryrun) {
+				// FIXME: warning should be passed to the error dialog
+				frontend::Alert::warning(_("Index sorting failed"),
+				bformat(_("LyX's automatic index sorting algorithm faced\n"
+				  "problems with the entry '%1$s'.\n"
+				  "Please specify the sorting of this entry manually, as\n"
+				  "explained in the User Guide."), spart));
+			}
 			// remove remaining \'s for the sorting part
 			docstring const ppart =
-				subst(spart, from_ascii("\\"), docstring());
+				subst(spart2, from_ascii("\\"), docstring());
 			os << ppart;
 			os << '@';
 			i += ppart.size() + 1;
-- 
2.39.2