X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FLaTeXFeatures.cpp;h=55db95350386506ffdbb6673b4f19ef90854dbcf;hb=c1ee1bc0baf00a64734ec5eb345884c057e4d9c1;hp=e19e771dd8fd2968a41311fa3d97bbc069dba691;hpb=73ccee113e2b1586a569904e964b935d22439f86;p=lyx.git

diff --git a/src/LaTeXFeatures.cpp b/src/LaTeXFeatures.cpp
index e19e771dd8..55db953503 100644
--- a/src/LaTeXFeatures.cpp
+++ b/src/LaTeXFeatures.cpp
@@ -79,6 +79,15 @@ static docstring const lyxarrow_def = from_ascii(
 	"{\\leavevmode\\,$\\triangleleft$\\,\\allowbreak}\n"
 	"{\\leavevmode\\,$\\triangleright$\\,\\allowbreak}}");
 
+// ZERO WIDTH SPACE (ZWSP) is actually not a space character
+// but marks a line break opportunity. Several commands provide a
+// line break opportunity. They differ in side-effects:
+// \allowbreak prevents hyphenation after hyphen or dash + ZWSP
+// \linebreak[<n>] takes an optional argument denoting "urgency".
+// The \LyXZeroWidthSpace wrapper allows customization in the preamble.
+static docstring const lyxZWSP_def = from_ascii(
+	"\\newcommand*\\LyXZeroWidthSpace{\\hspace{0pt}}");
+
 // for quotes without babel. This does not give perfect results, but
 // anybody serious about non-english quotes should use babel (JMarc).
 
@@ -1317,6 +1326,9 @@ TexString LaTeXFeatures::getMacros() const
 	if (mustProvide("lyxarrow"))
 		macros << lyxarrow_def << '\n';
 
+	if (mustProvide("lyxzerowidthspace"))
+		macros << lyxZWSP_def << '\n';
+
 	if (!usePolyglossia() && mustProvide("textgreek")) {
 	    // ensure LGR font encoding is defined also if fontenc is not loaded by LyX
 	   	if (params_.main_font_encoding() == "default")