// needed to handle encodings with babel
bool one_language = true;
string h_inputencoding = "auto";
-string h_paragraph_separation = "indent";
+string h_paragraph_separation = "indent";
+
+// necessary to avoid that our preamble stuff is added at each tex2lyx run
+// which would pollute the preamble when doing roundtrips
+bool ifundefined_color_set = false;
namespace {
else if (name == "undertilde")
h_use_undertilde = "2";
- else if (name == "babel" && !opts.empty()) {
- // check if more than one option was used - used later for inputenc
- // in case inputenc is parsed before babel, set the encoding to auto
- if (options.begin() != options.end() - 1) {
- one_language = false;
- h_inputencoding = "auto";
+ else if (name == "babel") {
+ // we have to do nothing if babel is loaded without any options, otherwise
+ // we would pollute the preamble with this call in every roundtrip
+ if (!opts.empty()) {
+ // check if more than one option was used - used later for inputenc
+ // in case inputenc is parsed before babel, set the encoding to auto
+ if (options.begin() != options.end() - 1) {
+ one_language = false;
+ h_inputencoding = "auto";
+ }
+ // babel takes the last language of the option of its \usepackage
+ // call as document language. If there is no such language option, the
+ // last language in the documentclass options is used.
+ handle_opt(options, known_languages, h_language);
+ delete_opt(options, known_languages);
}
- // babel takes the last language of the option of its \usepackage
- // call as document language. If there is no such language option, the
- // last language in the documentclass options is used.
- handle_opt(options, known_languages, h_language);
- delete_opt(options, known_languages);
}
else if (name == "fontenc") {
else if (name == "color") {
// with the following command this package is only loaded when needed for
// undefined colors, since we only support the predefined colors
- h_preamble << "\\@ifundefined{definecolor}\n {\\usepackage{color}}{}\n";
+ // only add it if not yet added
+ if (!ifundefined_color_set)
+ h_preamble << "\\@ifundefined{definecolor}\n {\\usepackage{color}}{}\n";
}
else if (name == "graphicx")
// test case \@ifundefined{date}{}{\date{}}
if (arg1 == "date" && arg2.empty() && arg3 == "\\date{}") {
h_suppress_date = "true";
+ // test case \@ifundefined{definecolor}{\usepackage{color}}{}
+ // because we could pollute the preamble with it in roundtrips
+ } else if (arg1 == "definecolor" && arg2 == "\\usepackage{color}"
+ && arg3.empty()) {
+ ifundefined_color_set = true;
} else if (!in_lyx_preamble) {
h_preamble << t.asInput()
<< '{' << arg1 << '}'