Re-fix #2005

Loading keyval does not work any longer. Fix it properly by de-activating
the equal character locally if graphics options use it.

We do this statically for Turkish and Latin in stable, as opposed to
master (where we have the ActiveChars languages tag)

lib/languages

@@ -1150,9 +1150,6 @@ Language turkish
 	QuoteStyle       english
 	Encoding         iso8859-9
 	LangCode         tr_TR
-	PostBabelPreamble
-	\usepackage{xkeyval}
-	EndPostBabelPreamble
 End
 
 # turkmen must be loaded locally with babel options,

src/insets/InsetGraphics.cpp

@@ -60,6 +60,7 @@ TODO
 #include "FuncRequest.h"
 #include "FuncStatus.h"
 #include "InsetIterator.h"
+#include "Language.h"
 #include "LaTeXFeatures.h"
 #include "Length.h"
 #include "Lexer.h"
@@ -835,18 +836,31 @@ void InsetGraphics::latex(otexstream & os,
 	string before;
 	string after;
 
-	if (runparams.moving_arg)
-		before += "\\protect";
-
-	// We never use the starred form, we use the "clip" option instead.
-	before += "\\includegraphics";
-
 	// Write the options if there are any.
 	bool const ps = runparams.flavor == OutputParams::LATEX
 		|| runparams.flavor == OutputParams::DVILUATEX;
 	string const opts = createLatexOptions(ps);
 	LYXERR(Debug::GRAPHICS, "\tOpts = " << opts);
 
+	if (contains(opts, '=')) {
+		std::set<Language const *> langs = buffer().masterBuffer()->getLanguages();
+		for (auto const lang : langs) {
+			if (lang->lang() == "turkish" || lang->lang() == "latin") {
+				// Turkish and Latin activate = (#2005).
+				// Deactivate locally for keyval option parsing
+				before = "\\begingroup\\catcode`\\=12";
+				after = "\\endgroup";
+				break;
+			}
+		}
+	}
+
+	if (runparams.moving_arg)
+		before += "\\protect";
+
+	// We never use the starred form, we use the "clip" option instead.
+	before += "\\includegraphics";
+
 	if (!opts.empty() && !message.empty())
 		before += ('[' + opts + ',' + message + ']');
 	else if (!opts.empty() || !message.empty())

status.23x

@@ -58,6 +58,9 @@ What's new
 
 * DOCUMENT INPUT/OUTPUT
 
+- (Re-)fix problems with activated equal sign and graphic options in Turkish
+  and Latin documents (bug 2005).
+
 - Fix toprule with booktabs/longtable and captions (bug 11589).
 
 - Avoid adding spaces when parsing an array in a macro template (bug 10499).