From 10589ad4c4acc186e582d2a7afcc45f4ef1c2515 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <megas.kapaneus@gmail.com>
Date: Thu, 8 Dec 2011 17:00:03 +0100
Subject: macros for conditional expansion (needed e.g. in (lazy) indices)

---
 tex/context/third/transliterator/t-transliterator.mkiv | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

(limited to 'tex')

diff --git a/tex/context/third/transliterator/t-transliterator.mkiv b/tex/context/third/transliterator/t-transliterator.mkiv
index 2ff4736..e9510e0 100644
--- a/tex/context/third/transliterator/t-transliterator.mkiv
+++ b/tex/context/third/transliterator/t-transliterator.mkiv
@@ -146,18 +146,17 @@
 
 \unexpanded\def\transliterate{\dosingleempty\dotransliterate}
 
-\def\expandabletransliterate[#1]#2{%
+\def\expandabletransliterate#1{%
   %\bgroup
     %\setuptransliterate[#1]%
     %\language[\transliterateparameter{hyphenate}]%
     \ctxlua{
       thirddata.translit.deficient_font = "\transliterateparameter{deficient_font}"
-      thirddata.translit.transliterate("\transliterateparameter{mode}","#2")
+      thirddata.translit.transliterate("\transliterateparameter{mode}","#1")
     }%
   %\egroup%
 }
 
-
 \unexpanded\def\starttransliterate{%
   \bgroup%
   \dosingleempty\dostarttransliterate%
@@ -174,6 +173,16 @@
   \egroup%
 }
 
+\newconditional\transliterate_useexpanded \setfalse\transliterate_useexpanded
+
+\def\transliterate_conditional[#1]#2{%
+  \ifconditional\transliterate_useexpanded
+    \transliterate[#1]{#2}%
+  \else
+    \expandabletransliterate{#2}%
+  \fi%
+}
+
 \protect \endinput
 
 %   vim:ft=context
-- 
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