From bb390f9fc92545b622c2d98e54cbd19b7a7dc53f Mon Sep 17 00:00:00 2001
From: sitandr <andr-sitnikov@mail.ru>
Date: Mon, 9 Sep 2024 01:44:35 +0300
Subject: [PATCH] Added multiple show rules, removing indents, grid examples

---
 src/SUMMARY.md                            |  7 ++++-
 src/snippets/grids.md                     | 22 +++++++++++++++
 src/typstonomicon/multiple-show.md        | 29 +++++++++++++++++++
 src/typstonomicon/remove-indent-nested.md | 34 +++++++++++++++++++++++
 4 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 src/snippets/grids.md
 create mode 100644 src/typstonomicon/multiple-show.md
 create mode 100644 src/typstonomicon/remove-indent-nested.md

diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index aa02ee3..51e551e 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -57,6 +57,7 @@
     - [Lines between list items](./snippets/layout/insert_lines.md)
     - [Shadowed shape](./snippets/layout/shapes.md)
   - [Code formatting](./snippets/code.md)
+  - [Tables & grids](./snippets/grids.md)
   - [Hyphenation]()
   - [Scripting](./snippets/scripting/index.md)
   - [Numbering](./snippets/numbering.md)
@@ -75,6 +76,7 @@
     - [Fake italic & Text shadows](./snippets/text/text_shadows.md)
   - [Special documents](./snippets/special/index.md)
   - [Use with external tools](./snippets/external.md)
+
 - [Typst Packages](./packages/index.md)
   - [Overview]()
   - [Drawing](./packages/drawing.md)
@@ -92,6 +94,7 @@
   - [Misc](./packages/misc.md)
     - [Counting words](./packages/word_count.md)
   - [External](./packages/external.md)
+
 - [Typstonomicon, or The Code You Should Not Write](./typstonomicon/index.md)
   - [Image with original size](./typstonomicon/original_image.md)
   - [Word count](./typstonomicon/word_count.md)
@@ -101,4 +104,6 @@
   - [Inline with](./typstonomicon/inline_with.md)
   - [Create zero-level chapters](./typstonomicon/chapters.md)
   - [Make all math display](./typstonomicon/math_display.md)
-  - [Empty pages without numbering](./typstonomicon/totally-empty.md)
\ No newline at end of file
+  - [Empty pages without numbering](./typstonomicon/totally-empty.md)
+  - [Multiple show rules](./typstonomicon/multiple-show.md)
+  - [Removing indent of nested lists](./typstonomicon/remove-indent-nested.md)
diff --git a/src/snippets/grids.md b/src/snippets/grids.md
new file mode 100644
index 0000000..3748003
--- /dev/null
+++ b/src/snippets/grids.md
@@ -0,0 +1,22 @@
+## Fractional grids
+
+For tables with lines of changing length, you can try using _grids in grids_. 
+
+<div class="warning">
+Don't use this where <a href="https://typst.app/docs/reference/model/table/#definitions-cell-colspan">cell.colspan and rowspan</a> will do.
+</div>
+
+```typ
+// author: jimpjorps
+
+#grid(
+  columns: (1fr,),
+  grid(
+    columns: (1fr,)*2, inset: 5pt, stroke: 1pt, [hello], [world]
+  ),
+  grid(
+    columns: (1fr,)*3, inset: 5pt, stroke: 1pt, [foo], [bar], [baz]
+  ),
+  grid.cell(inset: 5pt, stroke: 1pt)[abcxyz]
+)
+```
diff --git a/src/typstonomicon/multiple-show.md b/src/typstonomicon/multiple-show.md
new file mode 100644
index 0000000..42903cd
--- /dev/null
+++ b/src/typstonomicon/multiple-show.md
@@ -0,0 +1,29 @@
+## Multiple show rules
+
+Sometimes there is a need to apply several rules that look very similar. Or generate them from code. One of the ways to deal with this, the most cursed one, is this:
+
+```typ
+#let rules = (math.sum, math.product, math.root)
+
+#let apply-rules(rules, it) = {
+  if rules.len() == 0 {
+    return it
+  }
+  show rules.pop(): math.display
+  apply-rules(rules, it)
+}
+
+$product/sum root(3, x)/2$
+
+#show: apply-rules.with(rules)
+
+$product/sum root(3, x)/2$
+```
+
+Note that just in case of symbols (if you don't need element functions), one can use regular expressions. That is a more robust way:
+
+```typ
+#show regex("[" + math.product + math.sum + "]"): math.display
+
+$product/sum root(3, x)/2$
+```
\ No newline at end of file
diff --git a/src/typstonomicon/remove-indent-nested.md b/src/typstonomicon/remove-indent-nested.md
new file mode 100644
index 0000000..17ff29c
--- /dev/null
+++ b/src/typstonomicon/remove-indent-nested.md
@@ -0,0 +1,34 @@
+# Remove indent from nested lists
+
+```typ
+// author: fenjalien
+#show enum.item: it => {
+  if repr(it.body.func()) == "sequence" {
+    let children = it.body.children
+    let index = children.position(x => x.func() == enum.item)
+    if index != none {
+      enum.item({
+        children.slice(0, index).join()
+        set enum(indent: -1.2em) // Note that this stops an infinitly recursive show rule
+        children.slice(index).join()
+      })
+    } else {
+      it
+    }
+  } else {
+    it
+  }
+}
+
+arst
++ A
++ b
++ c
+  + d
++ e
+  + f
++ g
++ h
++ i
++ 
+```
\ No newline at end of file