2 files changed, 22 insertions, 11 deletions
diff --git a/Master/texmf-dist/tex/luatex/luavlna/luavlna.sty b/Master/texmf-dist/tex/luatex/luavlna/luavlna.sty
index 89e6d475435..31fb0ba4380 100644
--- a/Master/texmf-dist/tex/luatex/luavlna/luavlna.sty
+++ b/Master/texmf-dist/tex/luatex/luavlna/luavlna.sty
@@ -1,4 +1,4 @@
-\ProvidesPackage{luavlna}[2021-01-08 luavlna]
+\ProvidesPackage{luavlna}[2021-03-02 luavlna]
 
 \RequirePackage{kvoptions}
 
@@ -23,7 +23,7 @@
 
 \def\enablesplithyphens#1{%
   \ifcsname l@#1\endcsname%
-  \typeout{set lang #1, \the\csname l@#1\endcsname}
+  \typeout{set lang #1, \the\csname l@#1\endcsname}%
     \directlua{enable_split_hyphens("\the\csname l@#1\endcsname")}%
   \fi%
 }
diff --git a/Master/texmf-dist/tex/luatex/luavlna/luavlna.tex b/Master/texmf-dist/tex/luatex/luavlna/luavlna.tex
index ab47b8d6fcf..dd7415534d8 100644
--- a/Master/texmf-dist/tex/luatex/luavlna/luavlna.tex
+++ b/Master/texmf-dist/tex/luatex/luavlna/luavlna.tex
@@ -51,7 +51,7 @@ set_compounds = function(lang, compounds)
 end
 
 set_main_language = function(lang)
-  local langid = languages:get_number(lang)
+  local langid = get_lang_id(lang)
   if not langid then return nil, "Cannot find language number for: "..lang end
   luavlna.set_main_language(langid)
 end	
@@ -69,22 +69,33 @@ disable_split_hyphens = function(lang)
 end
 }     
 
+% the langno library supports both numeric and literal names
+% we can try to find the language ID from macros first, if it fails
+% we pass the language name to Lua. it will try to find ID in luanguage.dat and other sources
+\def\singlecharsgetlang#1{%
+  \ifcsname lang@#1\endcsname% 
+    \the\csname lang@#1\endcsname%
+  \else% unknown language macro, let langno library to find it 
+    #1%
+  \fi%
+}
+
 % Set letters which are prevented from breaking
 \def\singlechars#1#2{%
-\directlua{set_singlechars("#1","#2")}
+  \directlua{set_singlechars("\singlecharsgetlang{#1}","#2")}%
 }
 
 % Define compound initials
 \def\compoundinitials#1#2{%
-\directlua{set_compounds("#1","#2")}
+  \directlua{set_compounds("\singlecharsgetlang{#1}","#2")}%
 }
 % Enable inserting of visual marks for debugging
 \def\preventsingledebugon{%
-\directlua{luavlna.debug(true)}
+\directlua{luavlna.debug(true)}%
 }
 
 \def\preventsinglelang#1{%
-	\directlua{set_main_language("#1")}
+  \directlua{set_main_language("\singlecharsgetlang{#1}")}%
 } 
 
 %\newluatexattribute\preventsinglestatus
@@ -94,18 +105,18 @@ end
 	\preventsinglestatus=2
 }
 
-\def\preventsingleoff{
+\def\preventsingleoff{%
 	\preventsinglestatus=1
 }
 % Disable inserting of visual marks for dewbugging
 \def\preventsingledebugoff{%
-\directlua{luavlna.debug(false)}
+\directlua{luavlna.debug(false)}%
 }
 
 % enable/disable split hyphens for a language
 
-\def\enablesplithyphens#1{\directlua{enable_split_hyphens("#1")}}
-\def\disablesplithyphens#1{\directlua{disable_split_hyphens("#1")}}
+\def\enablesplithyphens#1{\directlua{enable_split_hyphens("\singlecharsgetlang{#1}")}}
+\def\disablesplithyphens#1{\directlua{disable_split_hyphens("\singlecharsgetlang{#1}")}}
 
 % disable processing of units or degrees