allow to set for the apparatus a language different from the one of the edition text

1 files changed, 67 insertions, 15 deletions

diff --git a/ekdosis.dtx b/ekdosis.dtx
index 8b19765..0b5ec2f 100644
--- a/ekdosis.dtx
+++ b/ekdosis.dtx
@@ -2979,6 +2979,11 @@ texts=latin[xml:lang="la"]+\textcolor{red}{;}+
 % document to change the default setting. Leaving this argument empty
 % as in \cs{SetDefaultRule}|{}| removes the line.
 %
+% \DescribeMacro{\SetApparatusLanguage} \newfeature[v1.2]
+% \cs{SetApparatusLang}\marg{languagename} can be used when it is
+% needed to apply in the apparatus criticus a language different from
+% the one that is selected in the edition text.
+% 
 % \paragraph{General Command}
 % \DescribeMacro{\SetApparatus} \cs{SetApparatus}\marg{csv list of
 % apparatus settings}\label{ref:apparatus-settings-b}\\
@@ -3011,8 +3016,14 @@ texts=latin[xml:lang="la"]+\textcolor{red}{;}+
 % also be used to remove the line.\\
 % \DescribeOption{norule}\hfill\tcboxverb{Default: not set}\\
 % |norule| does not accept any value and has the same effect as
-% |rule=none|.\label{ref:apparatus-settings-e}
-%
+% |rule=none|.\label{ref:apparatus-settings-e}\\
+% \DescribeOption{lang} |lang|$=$\meta{languagename}
+% \newfeature[v1.2]\hfill\tcboxverb{Default: not set}\\
+% |lang=<languagename>| is used as described above when it is needed
+% to apply in the apparatus criticus a language different from the one
+% that is selected in the edition text. |languagename| can be any
+% value accepted by \pkg{babel} or \pkg{polyglossia}.
+% 
 % As an example, an apparatus criticus with references to line numbers
 % printed in normal font, a colon as a separator between lemma texts
 % and variant readings, a broad space as a delimiter between entries
@@ -3106,6 +3117,7 @@ texts=latin[xml:lang="la"]+\textcolor{red}{;}+
 % \DescribeOption{ehook}
 % \DescribeOption{rule}
 % \DescribeOption{norule}
+% \DescribeOption{lang}
 % With regard to layout, any declared layer inherits the default values
 % described above in \vref{sec:single-layer-app}. That said, as the
 % optional argument of \cs{DeclareApparatus} accepts the exact same
@@ -6418,6 +6430,7 @@ Sample text with a \textcolor{red}{word} in red.
   store bhook = \bhook@val,
   store ehook = \ehook@val,
   store maxentries = \limit@val,
+  store lang = \lang@val,
   initial direction = LR,
   initial delim = {},
   initial ehook = {\csname ekd@end@apparatus\endcsname}
@@ -6449,7 +6462,8 @@ Sample text with a \textcolor{red}{word} in red.
     \luastringO{\sep@val},
     \luastringO{\bhook@val},
     \luastringO{\ehook@val},
-    \luastringO{\limit@val}
+    \luastringO{\limit@val},
+    \luastringO{\lang@val}
     )}
   \egroup
 }
@@ -6584,7 +6598,9 @@ Sample text with a \textcolor{red}{word} in red.
   initial delim = {},
   store rule = \ekd@default@rule,
   initial rule = \rule{0.4\columnwidth}{0.4pt},
-  noval norule = \def\ekd@default@rule{\mbox{}}
+  noval norule = \def\ekd@default@rule{\mbox{}},
+  store lang = \ekd@singleapp@lang,
+  initial lang = \ltx@ifpackageloaded{babel}{\languagename}{}
 }
 %    \end{macrocode}
 % \begin{macro}{\SetApparatus}
@@ -6642,6 +6658,17 @@ Sample text with a \textcolor{red}{word} in red.
 \NewDocumentCommand{\SetUnitDelimiter}{m}{\def\ekd@unit@delim{#1}}
 %    \end{macrocode}
 % \end{macro}
+% \begin{macro}{\SetApparatusLanguage}
+% \changes{v1.2}{2021/03/05}{defines an alternate language to be
+% applied in apparatus entries}
+% \cs{SetApparatusLang}\marg{languagename} can be used when
+% it is needed to apply in the apparatus criticus a language
+% different from the one that is selected in the edition text.
+%    \begin{macrocode}
+\NewDocumentCommand{\SetApparatusLanguage}{m}{%
+  \def\ekd@singleapp@lang{#1}}
+%    \end{macrocode}
+% \end{macro}
 % \begin{macro}{\footnoteruletrue}
 % \begin{macro}{\footnoterulefalse}
 % As \pkg{ekdosis} takes care of drawing a rule separating the main
@@ -7062,6 +7089,19 @@ Sample text with a \textcolor{red}{word} in red.
 }
 %    \end{macrocode}
 % \end{macro}
+% \begin{macro}{\app@lang}
+% This macro is used internally by \cs{lem}, \cs{rdg} and \cs{note} to
+% set the language for apparatus entries.
+%    \begin{macrocode}
+\def\app@lang{%
+  \ifekd@mapps
+  \luadirect{tex.sprint(ekdosis.getapplang(\luastring{\ekdan@type}))}%
+  \else
+  \ekd@singleapp@lang
+  \fi
+}
+%    \end{macrocode}
+% \end{macro}
 % \begin{macro}{\lem}
 % \cs{lem}\oarg{options}\marg{lemma text} inserts \meta{lemma text}
 % both in the edition text and in the apparatus criticus by default,
@@ -7145,8 +7185,8 @@ Sample text with a \textcolor{red}{word} in red.
         \ifdefined\ekdlr@pre%
           \space\unexpanded\expandafter{\ekdlr@pre}\space\else\fi
         \ltx@ifpackageloaded{babel}%
-        {{\noexpand\selectlanguage{\languagename}%
-            \unexpanded\expandafter{\ekd@lemmastyle}%
+        {{\unexpanded\expandafter{\ekd@lemmastyle}%
+            \noexpand\selectlanguage{\app@lang}%
             \unexpanded\expandafter{\ekdlr@alt}}}%
         {\unexpanded\expandafter{\ekd@lemmastyle}%
           \unexpanded\expandafter{\ekdlr@alt}}%
@@ -7156,8 +7196,8 @@ Sample text with a \textcolor{red}{word} in red.
         \ifdefined\ekdlr@pre%
           \space\unexpanded\expandafter{\ekdlr@pre}\space\else\fi
           \ltx@ifpackageloaded{babel}%
-          {{\noexpand\selectlanguage{\languagename}%
-              \unexpanded\expandafter{\ekd@lemmastyle}%
+          {{\unexpanded\expandafter{\ekd@lemmastyle}%
+              \noexpand\selectlanguage{\app@lang}%
               \unexpanded{#2}}}{%
             {\unexpanded\expandafter{\ekd@lemmastyle}\unexpanded{#2}}}%
         \ifdefined\ekdlr@post%
@@ -7234,7 +7274,7 @@ Sample text with a \textcolor{red}{word} in red.
         \ifdefined\ekdlr@pre%
           \space\unexpanded\expandafter{\ekdlr@pre}\space\else\fi
         \ltx@ifpackageloaded{babel}%
-          {{\noexpand\selectlanguage{\languagename}%
+          {{\noexpand\selectlanguage{\app@lang}%
             \unexpanded\expandafter{\ekdlr@alt}}}%
           {\unexpanded\expandafter{\ekdlr@alt}}%
         \ifdefined\ekdlr@post%
@@ -7243,7 +7283,7 @@ Sample text with a \textcolor{red}{word} in red.
         \ifdefined\ekdlr@pre%
           \space\unexpanded\expandafter{\ekdlr@pre}\space\else\fi
           \ltx@ifpackageloaded{babel}%
-          {{\noexpand\selectlanguage{\languagename}\unexpanded{#2}}}{%
+          {{\noexpand\selectlanguage{\app@lang}\unexpanded{#2}}}{%
             {\unexpanded{#2}}}%
         \ifdefined\ekdlr@post%
           \space\unexpanded\expandafter{\ekdlr@post}\space\else\fi
@@ -7342,8 +7382,8 @@ Sample text with a \textcolor{red}{word} in red.
       \current@ref@arg{\ekdn@labelb}{\ekdn@labele}%\hskip .25em
       \ifdefined\ekdn@lem
         \ltx@ifpackageloaded{babel}%
-          {{\noexpand\selectlanguage{\languagename}%
-              \unexpanded\expandafter{\ekd@lemmastyle}%
+        {{\unexpanded\expandafter{\ekd@lemmastyle}%
+            \noexpand\selectlanguage{\app@lang}%
               \unexpanded\expandafter{\ekdn@lem}}}%
           {\unexpanded\expandafter{\ekd@lemmastyle}%
             \unexpanded\expandafter{\ekdn@lem}}%
@@ -7351,7 +7391,7 @@ Sample text with a \textcolor{red}{word} in red.
           \unexpanded\expandafter{\ekdn@sep}\fi
           \else\fi%
           \ltx@ifpackageloaded{babel}%
-          {{\noexpand\selectlanguage{\languagename}\unexpanded{#2}}}{%
+          {{\noexpand\selectlanguage{\app@lang}\unexpanded{#2}}}{%
             {\unexpanded{#2}}}}}%
   \ifekd@mapps%
   \unconditional@appin[\ekdan@type]{\note@contents}%
@@ -9603,7 +9643,8 @@ function ekdosis.newapparatus(teitype,
                               appsep,
                               appbhook,
                               appehook,
-                              applimit)
+                              applimit,
+                              applang)
    if isintable(apparatuses, teitype)
    then
       tex.print("\\unexpanded{\\PackageWarning{ekdosis}{\""
@@ -9617,12 +9658,23 @@ function ekdosis.newapparatus(teitype,
                                  sep = appsep,
                                  bhook = appbhook,
                                  ehook = appehook,
-                                 limit = applimit})
+                                 limit = applimit,
+                                 lang = applang})
    end
    bagunits[teitype] = 1
    return true
 end
 
+function ekdosis.getapplang(teitype)
+   i = get_a_index(teitype, apparatuses)
+   if apparatuses[i].lang ~= ""
+   then
+      return apparatuses[i].lang
+   else
+      return "\\languagename"
+   end
+end
+
 function ekdosis.getappdelim(str)
    for i = 1,#apparatuses
    do