Update continued-table.md

docs/FAQ/continued-table.md

@@ -3,6 +3,8 @@ tags: [code, table]
 ---
 # 跨页的表格如何显示“续表”？
 
+## 手动方法
+
 ```typst
 #let xubiao = state("xubiao")
 #set table(stroke: (x, y) => {
@@ -28,3 +30,85 @@ tags: [code, table]
   }
 )
 ```
+
+## 包起来
+
+```typst
+#import "@preview/pointless-size:0.1.2": zh
+
+#set page(paper: "a8")
+
+#let continue-table-state = state("continue-table")
+
+#let header-attach-cell(columns) = table.cell(colspan: columns, {
+  context if continue-table-state.get() != false {
+    place(right + top, dy: -1.4em)[
+      #set text(size: zh("五号"))
+      续表
+    ]
+    v(-0.9em)
+  } else {
+    v(-0.9em)
+    continue-table-state.update(true)
+  }
+})
+
+#let continued-table = it => continue-table-state.update(false) + context {
+  if it.children.any(c => c.func() == table.header) {
+    return it
+  }
+
+  let meta = it.fields()
+  meta.remove("children")
+
+  let header = it.children.filter(c => c.func() == table.header)
+  let cells = it.children.filter(c => c.func() != table.header)
+  if header.len() == 0 {
+    let columns = meta.columns.len()
+    header = table.header(
+      header-attach-cell(columns),
+      ..cells.slice(0, columns),
+    )
+    cells = cells.slice(columns)
+  } else {
+    let columns = meta.columns.len()
+    let children = if type(header) != array { header.children } else {
+      header.map(h => h.children).flatten()
+    }
+    header = table.header(
+      header-attach-cell(columns),
+      ..children,
+    )
+  }
+
+  return table(
+    ..meta,
+    header,
+    ..cells,
+  )
+}
+
+#show table: continued-table
+
+#show figure: set block(breakable: true)
+
+#set figure(numbering: "1-1")
+
+#figure(table(
+  columns: 4,
+  stroke: red,
+  ..range(50).map(str),
+))
+
+#figure(table(
+  columns: 4,
+  // table.header(),
+  ..range(50).map(str),
+))
+
+#figure(table(
+  columns: 4,
+  // table.header(),
+  ..range(50).map(str),
+))
+```