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support . in mentions #150

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Merged
saschanaz merged 4 commits into from
Jul 27, 2025
Merged

support . in mentions #150

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554b1fc
fix #144
easrng Oct 29, 2024
35243ec
disallow "." at head and tail of username
easrng Dec 9, 2024
7b76584
Update CHANGELOG.md
saschanaz Apr 16, 2025
87ea22b
Merge branch 'develop' into patch-1
zyoshoka Apr 18, 2025
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
### Improvements

### Changes
- allow `.` in mentions (like `@bsky.brid.gy@bsky.brid.gy`)

### Bugfixes

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10 changes: 5 additions & 5 deletions src/internal/parser.ts
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Expand Up @@ -552,7 +552,7 @@ export const language = P.createLanguage<TypeTable>({
const parser = P.seq(
notLinkLabel,
P.str('@'),
P.regexp(/[a-z0-9_-]+/i),
P.regexp(/[a-z0-9_.-]+/i),
P.seq(
P.str('@'),
P.regexp(/[a-z0-9_.-]+/i),
Expand Down Expand Up @@ -586,9 +586,9 @@ export const language = P.createLanguage<TypeTable>({
}
}
}
// remove "-" of tail of username
// remove [.-] of tail of username
let modifiedName = username;
result = /-+$/.exec(username);
result = /[.-]+$/.exec(username);
if (result != null) {
if (modifiedHost == null) {
modifiedName = username.slice(0, (-1 * result[0].length));
Expand All @@ -597,8 +597,8 @@ export const language = P.createLanguage<TypeTable>({
invalidMention = true;
}
}
// disallow "-" of head of username
if (modifiedName.length === 0 || modifiedName[0] === '-') {
// disallow [.-] of head of username
if (modifiedName.length === 0 || /^[.-]/.test(modifiedName)) {
invalidMention = true;
}
// disallow [.-] of head of hostname
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18 changes: 18 additions & 0 deletions test/parser.ts
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Expand Up @@ -733,6 +733,12 @@ hoge`;
assert.deepStrictEqual(mfm.parse(input), output);
});

test('allow "." in username', () => {
const input = '@bsky.brid.gy@bsky.brid.gy';
const output = [MENTION('bsky.brid.gy', 'bsky.brid.gy', '@bsky.brid.gy@bsky.brid.gy')];
assert.deepStrictEqual(mfm.parse(input), output);
});

test('disallow "-" in head of username', () => {
const input = '@-abc';
const output = [TEXT('@-abc')];
Expand All @@ -745,6 +751,18 @@ hoge`;
assert.deepStrictEqual(mfm.parse(input), output);
});

test('disallow "." in head of username', () => {
const input = '@.abc';
const output = [TEXT('@.abc')];
assert.deepStrictEqual(mfm.parse(input), output);
});

test('disallow "." in tail of username', () => {
const input = '@abc.';
const output = [MENTION('abc', null, '@abc'), TEXT('.')];
assert.deepStrictEqual(mfm.parse(input), output);
});

test('disallow "." in head of hostname', () => {
const input = '@abc@.aaa';
const output = [TEXT('@abc@.aaa')];
Expand Down