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Change italic syntax to fit with other markdown implementations (#3916) 

currently italics require an html <i> syntax, unlike every other formatter. this is very confusing, especially as there doesnt seem to be any documentation.
this change makes both _text_ and *text* work, both things that users would expect from other implementations of markdown such as pleroma, discord and github.

Add test
This commit is contained in:
ibrokemypie 2019-01-20 19:44:52 +11:00 committed by syuilo
parent 11689e6d18
commit 361af34956
2 changed files with 38 additions and 7 deletions
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2
src/mfm/parser.ts
View File

@ -224,7 +224,7 @@ const mfm = P.createLanguage({
//#region Italic
italic: r =>
P.regexp(/<i>([\s\S]+?)<\/i>/, 1)
P.regexp(/(\*|_)([a-zA-Z0-9]+?[\s\S]*?)\1/, 2)
.map(x => createTree('italic', P.alt(
r.bold,
r.strike,

37
test/mfm.ts
View File

@ -288,7 +288,7 @@ describe('MFM', () => {
leaf('mention', { acct: '@a', canonical: '@a', username: 'a', host: null })
]);
const tokens4 = analyze('@\n@v\n@veryverylongusername' /* \n@toolongtobeasamention */ );
const tokens4 = analyze('@\n@v\n@veryverylongusername' /* \n@toolongtobeasamention */);
assert.deepStrictEqual(tokens4, [
text('@\n'),
leaf('mention', { acct: '@v', canonical: '@v', username: 'v', host: null }),
@ -883,15 +883,46 @@ describe('MFM', () => {
});
describe('italic', () => {
it('simple', () => {
const tokens = analyze('<i>foo</i>');
it('underscore', () => {
const tokens = analyze('_foo_');
assert.deepStrictEqual(tokens, [
tree('italic', [
text('foo')
], {}),
]);
});
it('simple with asterix', () => {
const tokens = analyze('*foo*');
assert.deepStrictEqual(tokens, [
tree('italic', [
text('foo')
], {}),
]);
});
it('exlude emotes', () => {
const tokens = analyze('*.*');
assert.deepStrictEqual(tokens, [
text("*.*"),
]);
});
it('mixed', () => {
const tokens = analyze('_foo*');
assert.deepStrictEqual(tokens, [
text('_foo*'),
]);
});
it('mixed', () => {
const tokens = analyze('*foo_');
assert.deepStrictEqual(tokens, [
text('*foo_'),
]);
});
},
);
});
describe('toHtml', () => {