I'm sure this is the most missing feature of LyX ;-)
Astonishingly we currently don't support Vietnamese. Support for this is relatively easy, as there
is a babel definition file available and inputenc's utf8 encoding covers all Vietnamese characters.
The only difference to other languages is that you have to load babel direcly
with the language options:
\usepackage[bla,vietnam,blub]{babel}
and not
\documentclass[bla,vietnam,blub]{article}
\usepackage{babel}
The attached patch provides proper suport for Vietnamese. Even the PDF-bookmarks of exported
documents will handle the double-accented Vietnamese characters.
Multi-language documents also work well, see the testcases in
http://bugzilla.lyx.org/show_bug.cgi?id=4245
when you are interested.
regards Uwe
Index: lib/languages
===================================================================
--- lib/languages (revision 20720)
+++ lib/languages (working copy)
@@ -66,4 +66,5 @@
turkish turkish "Turkish" false iso8859-9 tr_TR ""
ukrainian ukrainian "Ukrainian" false koi8-u uk_UA ""
usorbian usorbian "Upper Sorbian" false iso8859-2 hsb_DE ""
+vietnamese vietnam "Vietnamese" false utf8 vi_VN ""
welsh welsh "Welsh" false iso8859-15 cy_GB ""
Index: lib/lyx2lyx/LyX.py
===================================================================
--- lib/lyx2lyx/LyX.py (revision 20720)
+++ lib/lyx2lyx/LyX.py (working copy)
@@ -80,7 +80,7 @@
("1_3", [221], minor_versions("1.3" , 7)),
("1_4", range(222,246), minor_versions("1.4" , 5)),
("1_5", range(246,277), minor_versions("1.5" , 1)),
- ("1_6", range(277,291), minor_versions("1.6" , 0))] # Uwe Stöhr, wrap table
+ ("1_6", range(277,292), minor_versions("1.6" , 0))] # Uwe Stöhr, Vietnamese
def formats_list():
Index: lib/lyx2lyx/lyx_1_6.py
===================================================================
--- lib/lyx2lyx/lyx_1_6.py (revision 20720)
+++ lib/lyx2lyx/lyx_1_6.py (working copy)
@@ -402,6 +402,24 @@
i = i + 1
+def revert_vietnamese(document):
+ "Set language Vietnamese to English"
+ # Set document language from Vietnamese to English
+ i = 0
+ if document.language == "vietnamese":
+ document.language = "english"
+ i = find_token(document.header, "\\language", 0)
+ if i != -1:
+ document.header[i] = "\\language english"
+ j = 0
+ while True:
+ j = find_token(document.body, "\\lang vietnamese", j)
+ if j == -1:
+ return
+ document.body[j] = document.body[j].replace("\\lang vietnamese", "\\lang english")
+ j = j + 1
+
+
##
# Conversion hub
#
@@ -420,10 +438,12 @@
[287, [convert_wrapfig_options]],
[288, [convert_inset_command]],
[289, [convert_latexcommand_index]],
- [290, []]
+ [290, []],
+ [291, []]
]
-revert = [[289, [revert_wraptable]],
+revert = [[290, [revert_vietnamese]],
+ [289, [revert_wraptable]],
[288, [revert_latexcommand_index]],
[287, [revert_inset_command]],
[286, [revert_wrapfig_options]],
Index: src/Buffer.cpp
===================================================================
--- src/Buffer.cpp (revision 20721)
+++ src/Buffer.cpp (working copy)
@@ -155,7 +155,7 @@
namespace {
-int const LYX_FORMAT = 290; //Uwe Stöhr, wrap table
+int const LYX_FORMAT = 291; //Uwe Stöhr, Vietnamese
} // namespace anon
Index: src/BufferParams.cpp
===================================================================
--- src/BufferParams.cpp (revision 20720)
+++ src/BufferParams.cpp (working copy)
@@ -54,6 +54,7 @@
using std::count;
using std::endl;
+using std::find;
using std::string;
using std::istringstream;
using std::ostream;
@@ -899,7 +900,12 @@
language_options << ',';
language_options << language->babel();
}
- if (lyxrc.language_global_options && !language_options.str().empty())
+ // when Vietnamese is used, babel must directly be loaded with the
+ // language options, not in the class options
+ int viet = language_options.str().find("vietnam");
+ // viet = string::npos when not found
+ if (lyxrc.language_global_options && !language_options.str().empty()
+ && viet == string::npos)
clsoptions << language_options.str() << ',';
}
@@ -1548,7 +1554,11 @@
// other languages are used (lang_opts is then empty)
if (lang_opts.empty())
return string();
- if (!lyxrc.language_global_options)
+ // when Vietnamese is used, babel must directly be loaded with the
+ // language options
+ int viet = lang_opts.find("vietnam");
+ // viet = string::npos when not found
+ if (!lyxrc.language_global_options || viet != string::npos)
return "\\usepackage[" + lang_opts + "]{babel}";
return lang_pack;
}
