From 0b3d3d07acc2dd155a37571ab6e9936d6264f3fe Mon Sep 17 00:00:00 2001
From: Joseph Wright <joseph@texdev.net>
Date: Mon, 12 Aug 2024 17:06:56 +0100
Subject: [PATCH] Enable math grabbing in tabulars

Currently done by adding directly to an internal:
needs a proper interface.
---
 required/latex-lab/latex-lab-math.dtx                 | 4 ++++
 required/latex-lab/testfiles-math/mathcapture-019.lvt | 1 -
 required/latex-lab/testfiles-math/mathcapture-019.tlg | 4 ++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/required/latex-lab/latex-lab-math.dtx b/required/latex-lab/latex-lab-math.dtx
index a0ad418b7..dffa51b67 100644
--- a/required/latex-lab/latex-lab-math.dtx
+++ b/required/latex-lab/latex-lab-math.dtx
@@ -2034,6 +2034,10 @@
    \bool_set_false:N \l_@@_collected_bool
    \col@sep\tabcolsep \let\d@llarbegin\begingroup
                                     \let\d@llarend\endgroup
+%    \end{macrocode}
+%   A proper switching mechanism is needed: for the present, do directly.
+%    \begin{macrocode}
+   \cs_set_protected:Npn \@@_grab_dollar:w { \@@_grab_dollar_loop: }
    \@tabarray}
  }
 %    \end{macrocode}
diff --git a/required/latex-lab/testfiles-math/mathcapture-019.lvt b/required/latex-lab/testfiles-math/mathcapture-019.lvt
index f5e3a1a5a..3719cd59b 100644
--- a/required/latex-lab/testfiles-math/mathcapture-019.lvt
+++ b/required/latex-lab/testfiles-math/mathcapture-019.lvt
@@ -15,7 +15,6 @@
 
 
 \ExplSyntaxOn
-\cs_gset_protected:Npn \__math_grab_dollar:w { \__math_grab_dollar_loop: }
 \math_processor:n
   {
     \TYPE {-----------------------------------}
diff --git a/required/latex-lab/testfiles-math/mathcapture-019.tlg b/required/latex-lab/testfiles-math/mathcapture-019.tlg
index 47459e29a..e2e2a0bdb 100644
--- a/required/latex-lab/testfiles-math/mathcapture-019.tlg
+++ b/required/latex-lab/testfiles-math/mathcapture-019.tlg
@@ -2,8 +2,8 @@ This is a generated file for the l3build validation system.
 Don't change this file in any respect.
 -----------------------------------
 Math env math
-y=mx+c
-====>first-result=macro:->y=mx+c
+y = mx + c
+====>first-result=macro:->y = mx + c
 ====>first-tmpmathcontent=macro:->
 ====>formula has no subparts
 -----------------------------------