1 files changed, 16 insertions, 7 deletions
diff --git a/tex/context/third/transliterator/t-transliterator.mkiv b/tex/context/third/transliterator/t-transliterator.mkiv
index ed9fda7..2ff4736 100644
--- a/tex/context/third/transliterator/t-transliterator.mkiv
+++ b/tex/context/third/transliterator/t-transliterator.mkiv
@@ -57,6 +57,7 @@
   hyphenate=cz,
   mode=ru_old,
   sr_exceptions=\v!yes,
+  deficient_font=\v!no,
 ]
 
 %D Possible values for \type{mode} are by the time of this writing:
@@ -64,11 +65,13 @@
 %D \type{all}, \type{iso9_ocs}, \type{ocs}, \type{ocs_gla}, \type{ru_cz},
 %D \type{ocs_cz}, \type{gr} and \type{gr_n}.
 %D As not all fonts, even the expensive ones, support some of the most frequent
-%D unicode signs used in ISO~9 there are fallbacks for the transliterations of
-%D the weak and hard sign: \type{iso9_ocs_hack}, which is essentially
-%D \type{iso9_ocs}, and \type{ru_old_jer_hack}, which is essentially
-%D \type{ru_old}.  These two transliterate {\em ь} and {\em ъ} (both upper and
-%D lower case) to the more common, but non-ISO characters {\em '} and {\em ''}
+%D unicode signs used in ISO~9, there are fallbacks for the transliterations of
+%D the weak and hard sign.
+%D They work with the modes \type{iso9_ocs}, \type{all} and
+%D \type{ru_old} only and can be triggered by setting the
+%D variable \type{deficient_font} to the value {\em yes}.
+%D This will transliterate {\em ь} and {\em ъ} (both upper and
+%D lower case) to the more common, but non-ISO characters {\em ’} and {\em ”}
 %D respectively.
 %D Possible values for \type{hyphenate} are all valid \CONTEXT\ language code, for an
 %D overview see \type{http://wiki.contextgarden.net/Language_Codes}.
@@ -134,7 +137,10 @@
     \setuptransliterate[#1]%
   \fi
     \language[\transliterateparameter{hyphenate}]%
-    \ctxlua{thirddata.translit.transliterate("\transliterateparameter{mode}","\luaescapestring{#2}")}%
+    \ctxlua{
+      thirddata.translit.deficient_font = "\transliterateparameter{deficient_font}"
+      thirddata.translit.transliterate("\transliterateparameter{mode}","\luaescapestring{#2}")
+    }%
   \egroup%
 }
 
@@ -144,7 +150,10 @@
   %\bgroup
     %\setuptransliterate[#1]%
     %\language[\transliterateparameter{hyphenate}]%
-    \ctxlua{thirddata.translit.transliterate("\transliterateparameter{mode}","#2")}%
+    \ctxlua{
+      thirddata.translit.deficient_font = "\transliterateparameter{deficient_font}"
+      thirddata.translit.transliterate("\transliterateparameter{mode}","#2")
+    }%
   %\egroup%
 }