--- math-font-fallback ---
// Test font fallback.
$ よ and "よ" and 🏳️‍🌈 $

--- math-lr-scripts ---
// Test interactions with script attachments.
$ lr(size: #3em, |)_a^b lr(size: #3em, zws|)_a^b
  lr(size: #3em, [x])_0^1 [x]_0^1
  lr(size: #1em, lr(size: #10em, [x]))_0^1 $

--- math-font-features-switch ---
#let scr(it) = text(features: ("ss01",), $cal(it)$)
$cal(P)_i != scr(P)_i$, $cal(bold(I))_l != bold(scr(I))_l$
$ product.co_(B in scr(B))^(B in scr(bold(B))) cal(B)(X) $

--- math-font-covers ---
#show math.equation: set text(
  font: (
    // Ignore that this regex actually misses some of the script glyphs...
    (name: "XITS Math", covers: regex("[\u{1D49C}-\u{1D503}]")),
  ),
  features: ("ss01",),
)
$ cal(P)_i (X) * cal(C)_1 $

--- math-op-font ---
// Test with different font.
#let colim = math.op(
  text(font: "IBM Plex Sans", weight: "regular", size: 0.8em)[colim],
  limits: true,
)
$ colim_(x -> 0) inline(colim_(x -> 0)) $

--- math-op-set-font ---
// Test setting font.
#show math.equation: set text(weight: "regular")
#let lig = math.op("fi")
#let test = $sech(x) mod_(x -> oo) lig_1(X)$
#test
#show math.op: set text(font: "New Computer Modern")
#test

--- math-root-show-rule-1 ---
#show "√": set text(red, font: "Noto Sans Math")
$ root(2, (a + b) / c) $

--- math-root-show-rule-2 ---
#show "√": set text(2em)
$ sqrt(2) $

--- math-root-show-rule-3 ---
// Test cursed show rule.
#show "√": "!"
$ sqrt(2) root(2, 2) $

--- math-root-show-rule-4 ---
#show math.root: set text(red)
$ sqrt(x + y) root(4, 2) $

--- math-root-show-rule-5 ---
#show math.root: it => {
  show "√": set text(purple) if it.index == none
  it
}
$ sqrt(1/2) root(3, 1/2) $

--- math-delim-show-rule-1 ---
#show regex("\[|\]"): set text(green, font: "Noto Sans Math")
$ mat(delim: \[, a, b, c; d, e, f; g, h, i) quad [x + y] $

--- math-delim-show-rule-2 ---
#show math.vec: it => {
  show regex("\(|\)"): set text(blue)
  it
}
$ vec(1, 0, 0), mat(1; 0; 0), (1), binom(n, k) $

--- math-delim-show-rule-3 ---
#show "⏟": set text(fuchsia)
$ underbrace(1 + 1 = 2, "obviously") $

--- math-delim-show-rule-4 ---
#show "{": set text(navy)
$ cases(x + y + z = 0, 2x - y = 0, -5y + 2z = 0) $

--- math-delim-show-rule-5 ---
#show regex("\(|\)"): set text(1.5em)
$ 10 dot (9 - 5) dot (1/2 - 1) $

--- math-primes-show-rule ---
#show math.primes: set text(maroon)
$f'(x), f''''''(x)$

--- math-glyph-show-rule ---
#show "+": set text(orange, font: "Noto Sans Math")
$ 1 + 1 = +2 $
#show "+": text(2em)[#sym.plus.circle]
$ 1 + 1 = +2 $

--- math-accent-show-rule-1 ---
#show "\u{0302}": set text(blue, font: "XITS Math")
$hat(x)$, $hat(hat(x))$, x\u{0302}

--- math-accent-show-rule-2 ---
#let rhat(x) = {
  show "\u{0302}": set text(red)
  math.hat(x)
}
$hat(x)$, $rhat(x)$, $hat(rhat(x))$, $rhat(hat(x))$, x\u{0302}

--- math-accent-show-rule-3 ---
#show math.accent: it => {
  show "\u{0300}": set text(green)
  it
}
$grave(x)$, x\u{0300}

--- math-accent-show-rule-4 ---
#show "\u{0302}": box(inset: (bottom: 5pt), text(0.5em, sym.diamond.small))
$hat(X)$, $hat(x)$