1 files changed, 30 insertions, 1 deletions
diff --git a/tex/context/base/node-rul.mkiv b/tex/context/base/node-rul.mkiv
index 40d0014dc..ba2f0aed3 100644
--- a/tex/context/base/node-rul.mkiv
+++ b/tex/context/base/node-rul.mkiv
@@ -11,6 +11,8 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
+% todo: ex and and em traveling with attribute
+
 \writestatus{loading}{ConTeXt Core Macros / Bars}
 
 %D The name of this file might change.
@@ -255,13 +257,39 @@
    \glet\dodoshifted\dodoshiftedindeed
    \dodoshifted}
 
+% \def\dodoshiftedindeed#1%
+%   {\def\currentshift{#1}%
+%    \advance\csname\??ra:#1:c\endcsname\plusone
+%    \scratchcounter\csname\??ra:#1:c\endcsname
+%    \dosetattribute{shifted}{\numexpr1000*\scratchcounter
+%      +\csname\??ra#1\ifcsname\??ra#1:\number\scratchcounter\s!parent\endcsname:\number\scratchcounter\fi:a\endcsname}%
+%    \setupalign[\shiftparameter\c!align]%
+%    \dosetshiftattributes\c!style\c!color}
+
+\def\dostartisolation{\char0 }
+\def\dostopisolation {\char0 }
+\def\doisolator      {\char0 }
+
+\def\doisolatedgroupedalign#1#2%
+  {\groupedcommand
+     {\begingroup\dostartisolation\begingroup#1}
+     {#2\endgroup\dostopisolation\endgroup}}
+
+\def\dosetupisolatedalign#1%
+  {\doisolator
+   \setupalign[#1]\relax}
+
 \def\dodoshiftedindeed#1%
   {\def\currentshift{#1}%
    \advance\csname\??ra:#1:c\endcsname\plusone
    \scratchcounter\csname\??ra:#1:c\endcsname
    \dosetattribute{shifted}{\numexpr1000*\scratchcounter
      +\csname\??ra#1\ifcsname\??ra#1:\number\scratchcounter\s!parent\endcsname:\number\scratchcounter\fi:a\endcsname}%
-   \dosetshiftattributes\c!style\c!color}
+   \dosetshiftattributes\c!style\c!color
+   \dosetupisolatedalign{\shiftparameter\c!align}}
+
+\def\doshifted#1%
+  {\doisolatedgroupedalign{\dodoshifted{#1}}{}}
 
 \unexpanded\def\startshift[#1]%
   {\begingroup
@@ -287,6 +315,7 @@
    \c!continue=\v!no,
    \c!dy=0,
    \c!unit=ex,
+   \c!align=,
    \c!style=,
    \c!color=]