1 files changed, 25 insertions, 8 deletions
diff --git a/tex/context/base/mkxl/syst-aux.mkxl b/tex/context/base/mkxl/syst-aux.mkxl
index 2f7acdca0..aceb52aac 100644
--- a/tex/context/base/mkxl/syst-aux.mkxl
+++ b/tex/context/base/mkxl/syst-aux.mkxl
@@ -484,24 +484,41 @@
 %D When we were developing the scientific units module, we encountered different
 %D behavior in text and math mode, which was due to this grouping subtilities. We
 %D therefore decided to use \type {\begingroup} instead of \type {\bgroup}.
+%D
+%D \stoptyping
+%D \doifelsealldefined  {foo,ofo}  {YES}{NOP}
+%D \doifelseallundefined{foo,ofo}  {YES}{NOP}
+%D \doifelsealldefined  {relax,ofo}{YES}{NOP}
+%D \doifelseallundefined{foo,relax}{YES}{NOP}
+%D \stoptyping
+
+\def\syst_helpers_do_if_all_defined_else#1%
+  {\ifcsname#1\endcsname\else
+     \donefalse
+     \expandafter\quitcommalist % added
+   \fi}
 
-\permanent\protected\def\doifelsealldefined#1%
+\def\syst_helpers_do_if_all_undefined_else#1%
+  {\ifcsname#1\endcsname
+     \donefalse
+     \expandafter\quitcommalist
+   \fi}
+
+\permanent\protected\def\syst_helpers_do_if_all_else#1#2%
   {\begingroup
    \donetrue % we could use a reserved one and avoid the group
-   \processcommalist[#1]\syst_helpers_do_if_all_defined_else
+   \processcommalist[#2]#1%
    \ifdone
      \endgroup\expandafter\firstoftwoarguments
    \else
      \endgroup\expandafter\secondoftwoarguments
    \fi}
 
-\aliased\let\doifalldefinedelse\doifelsealldefined
+\permanent\protected\def\doifelsealldefined  {\syst_helpers_do_if_all_else\syst_helpers_do_if_all_defined_else}
+\permanent\protected\def\doifelseallundefined{\syst_helpers_do_if_all_else\syst_helpers_do_if_all_undefined_else}
 
-\def\syst_helpers_do_if_all_defined_else#1%
-  {\ifcsname#1\endcsname\else
-     \donefalse
-     \expandafter\quitcommalist % added
-   \fi}
+\aliased\let\doifalldefinedelse  \doifelsealldefined
+\aliased\let\doifallundefinedelse\doifelseallundefined
 
 %D \macros
 %D   {doif,doifelse,doifnot}