Implement math `cancel` function (#793)

2 files changed, 34 insertions, 0 deletions

diff --git a/tests/ref/math/cancel.png b/tests/ref/math/cancel.png
new file mode 100644
index 00000000..96b29c45
--- /dev/null
+++ b/tests/ref/math/cancel.png
diff --git a/tests/typ/math/cancel.typ b/tests/typ/math/cancel.typ
new file mode 100644
index 00000000..315cc7d4
--- /dev/null
+++ b/tests/typ/math/cancel.typ
@@ -0,0 +1,34 @@
+// Tests the cancel() function.
+
+---
+// Inline
+$a + 5 + cancel(x) + b - cancel(x)$
+
+$c + (a dot.c cancel(b dot.c c))/(cancel(b dot.c c))$
+
+---
+// Display
+#set page(width: auto)
+$ a + b + cancel(b + c) - cancel(b) - cancel(c) - 5 + cancel(6) - cancel(6) $
+$ e + (a dot.c cancel((b + c + d)))/(cancel(b + c + d)) $
+
+---
+// Inverted
+$a + cancel(x, inverted: #true) - cancel(x, inverted: #true) + 10 + cancel(y) - cancel(y)$
+$ x + cancel("abcdefg", inverted: #true) $
+
+---
+// Cross
+$a + cancel(b + c + d, cross: #true, stroke: #red) + e$
+$ a + cancel(b + c + d, cross: #true) + e $
+
+---
+// Resized and styled
+#set page(width: 200pt, height: auto)
+$a + cancel(x, length: #200%) - cancel(x, length: #50%, stroke: #{red + 1.1pt})$
+$ b + cancel(x, length: #150%) - cancel(a + b + c, length: #50%, stroke: #{blue + 1.2pt}) $
+
+---
+// Rotated
+$x + cancel(y, rotation: #90deg) - cancel(z, rotation: #135deg)$
+$ e + cancel((j + e)/(f + e)) - cancel((j + e)/(f + e), rotation: #30deg) $