From ae46cf7c3e34bab7da0ed07b5efec4ae1a83b4bd Mon Sep 17 00:00:00 2001
From: Titus Wormer <tituswormer@gmail.com>
Date: Mon, 31 Jan 2022 16:18:04 +0100
Subject: [PATCH] Remove warnings on lists, colons

---
 index.js     | 38 ++++++++------------------------------
 package.json |  3 +--
 test.js      | 41 ++++++++++++++++++-----------------------
 3 files changed, 27 insertions(+), 55 deletions(-)

diff --git a/index.js b/index.js
index fa84d9f..98b5aa4 100644
--- a/index.js
+++ b/index.js
@@ -14,10 +14,6 @@ import {containerFlow} from 'mdast-util-to-markdown/lib/util/container-flow.js'
 import {indentLines} from 'mdast-util-to-markdown/lib/util/indent-lines.js'
 import {safe} from 'mdast-util-to-markdown/lib/util/safe.js'
 import {track} from 'mdast-util-to-markdown/lib/util/track.js'
-import {visit, EXIT} from 'unist-util-visit'
-
-let warningColonInFootnote = false
-let warningListInFootnote = false
 
 /**
  * @returns {FromMarkdownExtension}
@@ -144,41 +140,23 @@ export function gfmFootnoteToMarkdown() {
     let value = tracker.move('[^')
     const exit = context.enter('footnoteDefinition')
     const subexit = context.enter('label')
-    const id = safe(context, association(node), {
-      ...tracker.current(),
-      before: value,
-      after: ']'
-    })
-    value += tracker.move(id)
     value += tracker.move(
-      ']:' + (node.children && node.children.length > 0 ? ' ' : '')
+      safe(context, association(node), {
+        ...tracker.current(),
+        before: value,
+        after: ']'
+      })
     )
     subexit()
+    value += tracker.move(
+      ']:' + (node.children && node.children.length > 0 ? ' ' : '')
+    )
     tracker.shift(4)
     value += tracker.move(
       indentLines(containerFlow(node, context, tracker.current()), map)
     )
     exit()
 
-    if (!warningColonInFootnote && id.includes(':')) {
-      console.warn(
-        '[mdast-util-gfm-footnote] Warning: Found a colon in footnote identifier `' +
-          id +
-          '`. GitHub currently crahes on colons in footnotes (see <https://github.com/github/cmark-gfm/issues/241> for more info)'
-      )
-      warningColonInFootnote = true
-    }
-
-    if (!warningListInFootnote) {
-      visit(node, 'list', () => {
-        console.warn(
-          '[mdast-util-gfm-footnote] Warning: Found a list in a footnote definition. GitHub currently crahes on lists in footnotes (see <https://github.com/github/cmark-gfm/issues/241> for more info)'
-        )
-        warningListInFootnote = true
-        return EXIT
-      })
-    }
-
     return value
 
     /** @type {Map} */
diff --git a/package.json b/package.json
index fec4104..6930b11 100644
--- a/package.json
+++ b/package.json
@@ -36,8 +36,7 @@
   "dependencies": {
     "@types/mdast": "^3.0.0",
     "mdast-util-to-markdown": "^1.3.0",
-    "micromark-util-normalize-identifier": "^1.0.0",
-    "unist-util-visit": "^4.0.0"
+    "micromark-util-normalize-identifier": "^1.0.0"
   },
   "devDependencies": {
     "@types/tape": "^4.0.0",
diff --git a/test.js b/test.js
index 07cdece..e09f017 100644
--- a/test.js
+++ b/test.js
@@ -269,32 +269,27 @@ test('mdast -> markdown', (t) => {
     'should escape what would otherwise be an footnote definition'
   )
 
-  const warn = console.warn
-  let called = 0
-
-  console.warn = () => {
-    called++
-  }
-
-  toMarkdown(
-    {type: 'footnoteDefinition', identifier: 'a:b', children: []},
-    {extensions: [gfmFootnoteToMarkdown()]}
+  t.deepEqual(
+    toMarkdown(
+      {type: 'footnoteDefinition', identifier: 'a:b', children: []},
+      {extensions: [gfmFootnoteToMarkdown()]}
+    ),
+    '[^a:b]:\n',
+    'should support colons in footnote definitions'
   )
 
-  t.equal(called, 1, 'should warn on colons in footnote identifiers')
-
-  toMarkdown(
-    {
-      type: 'footnoteDefinition',
-      identifier: 'a',
-      children: [{type: 'list', children: []}]
-    },
-    {extensions: [gfmFootnoteToMarkdown()]}
+  t.deepEqual(
+    toMarkdown(
+      {
+        type: 'footnoteDefinition',
+        identifier: 'a',
+        children: [{type: 'list', children: [{type: 'listItem', children: []}]}]
+      },
+      {extensions: [gfmFootnoteToMarkdown()]}
+    ),
+    '[^a]: *\n',
+    'should support lists in footnote definitions'
   )
 
-  t.equal(called, 2, 'should warn on lists in footnote definitions')
-
-  console.warn = warn
-
   t.end()
 })