[latex3-commits] [git/LaTeX3-latex3-latex2e] luatex-test-shift: Normalize shift of null delimiters in LuaTeX tests (5d121d49)

[Marcel Fabian Krüger]

Repository : https://github.com/latex3/latex2e
On branch  : luatex-test-shift
Link       : https://github.com/latex3/latex2e/commit/5d121d4949fa88bc2f6bac419f64393fc513dd8f

>---------------------------------------------------------------

commit 5d121d4949fa88bc2f6bac419f64393fc513dd8f
Author: Marcel Fabian Krüger <tex at 2krueger.de>
Date:   Wed May 5 15:10:45 2021 +0200

    Normalize shift of null delimiters in LuaTeX tests


>---------------------------------------------------------------

5d121d4949fa88bc2f6bac419f64393fc513dd8f
 build-config.lua            |  2 +-
 support/fixup_mathaxis.lua  | 14 ++++++++++++++
 support/regression-test.tex |  3 +++
 support/test2e.tex          |  1 +
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/build-config.lua b/build-config.lua
index 4235aff7..742b9c81 100644
--- a/build-config.lua
+++ b/build-config.lua
@@ -37,7 +37,7 @@ checksuppfiles = checksuppfiles     or
     "lualibs*.lua", 
     "fontloader*.lua",
     "luaotfload*.lua",
-    "luaotfloat.sty"
+    "fixup_mathaxis.lua",
   }
 stdengine      = stdengine          or "etex"
 tagfiles       = tagfiles or {"*.dtx","*.ins","*.tex","README.md"}
diff --git a/support/fixup_mathaxis.lua b/support/fixup_mathaxis.lua
new file mode 100644
index 00000000..97e13ff6
--- /dev/null
+++ b/support/fixup_mathaxis.lua
@@ -0,0 +1,14 @@
+local hlist_id = node.id'hlist'
+local vlist_id = node.id'vlist'
+local function recurse(h)
+  for n, id, sub in node.traverse(h) do
+    if id == hlist_id or id == vlist_id then
+      if sub == 13 and (not n.head) and n.shift == 0 then
+        n.shift = -tex.getmath("axis", "text")
+      end
+      recurse(n.head)
+    end
+  end
+  return true
+end
+luatexbase.add_to_callback('post_mlist_to_hlist_filter', recurse, 'l3build.shift')
diff --git a/support/regression-test.tex b/support/regression-test.tex
index eae274e0..ef7ee26d 100644
--- a/support/regression-test.tex
+++ b/support/regression-test.tex
@@ -174,6 +174,9 @@
       >>
   }
 \fi
+\ifx\directlua\@undefined
+  \directlua{require'fixup_mathaxis'}%
+\fi
 \reset at catcodes
 %% 
 %%
diff --git a/support/test2e.tex b/support/test2e.tex
index 72a751ce..0f705457 100644
--- a/support/test2e.tex
+++ b/support/test2e.tex
@@ -277,6 +277,7 @@ else
 end
 }
 %\fi
+\directlua{require'fixup_mathaxis'}%
 \fi
 
 % Load the map file early so it does not appear in the log.