1 files changed, 39 insertions, 0 deletions
diff --git a/tex/context/base/mkxl/bndr-ini.mkxl b/tex/context/base/mkxl/bndr-ini.mkxl
new file mode 100644
index 000000000..8481048bb
--- /dev/null
+++ b/tex/context/base/mkxl/bndr-ini.mkxl
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+%D \module
+%D   [       file=bndr-ini,
+%D        version=2022.05.02,
+%D          title=\CONTEXT\ Boundary Macros,
+%D       subtitle=Initialization,
+%D         author=Hans Hagen,
+%D           date=\currentdate,
+%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+\writestatus{loading}{ConTeXt Boundary Macros / Initialization}
+
+\unprotect
+
+\registerctxluafile{bndr-ini}{autosuffix}
+
+% \defineboundary[foobar][public]\meaning\foobar\par
+% \defineboundary[barfoo][public]\meaning\barfoo\par
+
+\immutable\def\??boundaryprefix{c_bndr_}
+
+\permanent\tolerant\protected\def\defineboundary[#1]#*[#2]% nicer for users
+  {\doifelseinset\s!public{#2}%
+     {\ifcsname#1\endcsname\else
+        \global\permanent\expandafter\integerdef\csname#1\endcsname\clf_defineboundary{#1}\relax
+      \fi}
+     {\ifcsname\??boundaryprefix#1\endcsname\else
+        \global\permanent\expandafter\integerdef\csname\??boundaryprefix#1\endcsname\clf_defineboundary{#1}\relax
+      \fi}}
+
+\permanent\protected\def\newboundary#1% nicer for lowlevel
+  {\ifdefined#1\else
+     \global\immutable\integerdef#1\clf_defineboundary{\csstring#1}\relax
+   \fi}
+
+\protect