remark-stringify: fix unneeded escape of exclamation mark

Closes GH-427. Closes GH-429. Reviewed-by: Christian Murphy <christian.murphy.42@gmail.com> Reviewed-by: Merlijn Vos <merlijn@soverin.net> Reviewed-by: Titus Wormer <tituswormer@gmail.com>
remarkjs · Jul 23, 2019 · c036464 · c036464
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commit c036464
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diff --git a/packages/remark-stringify/lib/escape.js b/packages/remark-stringify/lib/escape.js
@@ -90,8 +90,6 @@ function factory(options) {
         character === backslash ||
         character === graveAccent ||
         character === asterisk ||
-        (character === exclamationMark &&
-          value.charAt(position + 1) === leftSquareBracket) ||
         character === leftSquareBracket ||
         character === lessThan ||
         (character === ampersand && prefix(value.slice(position)) > 0) ||

diff --git a/packages/remark-stringify/test.js b/packages/remark-stringify/test.js
@@ -871,7 +871,7 @@ test('stringify escapes', function(t) {
 
   t.equal(toString(u('image', {alt: 'a]b'})), '![a\\]b](<>)', '`]` (in images)')
 
-  t.equal(toString('![a'), '\\!\\[a', '`!` before `[`')
+  t.equal(toString('![a'), '!\\[a', '`!` before `[`')
 
   t.equal(toString('a~b'), 'a~b', '`~`')
   t.equal(toString('a~~b'), 'a\\~~b', '`~~`')