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-rw-r--r--tex/context/base/mkiv/strc-mat.mkiv13
1 files changed, 11 insertions, 2 deletions
diff --git a/tex/context/base/mkiv/strc-mat.mkiv b/tex/context/base/mkiv/strc-mat.mkiv
index 20a639fa3..c6b277991 100644
--- a/tex/context/base/mkiv/strc-mat.mkiv
+++ b/tex/context/base/mkiv/strc-mat.mkiv
@@ -46,6 +46,7 @@
\c!indentnext=\v!no,
\c!alternative=\s!default,
\c!strut=\v!no,
+ \c!numberstrut=\v!yes, % \v!no \v!yes \v!always
\c!distance=2\emwidth]
\setupformulaframed
@@ -236,11 +237,14 @@
\global\setfalse\c_strc_formulas_inside_place_sub
\to \everyresetformulas
+\def\strc_formulas_place_number_noneed
+ {\doif{\formulaparameter\c!numberstrut}\v!always\strut}
+
\def\strc_formulas_place_numbering % place formula
{\settrue\c_strc_formulas_handle_number
\strc_formulas_check_reference\c_strc_formulas_place_number_mode\currentplaceformulareference
\ifnum\c_strc_formulas_place_number_mode=\plustwo
- \glet\strc_formulas_place_number\relax
+ \glet\strc_formulas_place_number\strc_formulas_place_number_noneed
\else
\glet\strc_formulas_place_number\strc_formulas_place_number_indeed
\fi
@@ -281,7 +285,12 @@
\begingroup
\useformulastyleandcolor\c!numberstyle\c!numbercolor
\formulaparameter\c!numbercommand
- {\strut
+ {\edef\p_strut{\formulaparameter\c!numberstrut}%
+ \ifx\p_strut\v!always
+ \strut
+ \else\ifx\p_strut\v!yes
+ \strut
+ \fi\fi
\formulaparameter\c!left
\namedtaggedlabeltexts
\t!formulalabel \v!formula