b3ce15f0dd
Comment mentions stop at a space; person mentions must accept spaces because historical display names are commonly multi-word. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
24 lines
952 B
TypeScript
24 lines
952 B
TypeScript
/**
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* Given the current textarea value and cursor position, returns the
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* @-person-mention query being typed (the text after the last triggering @),
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* or null if no person-mention is active.
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*
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* Rules — distinct from comment-mentions in `mention.ts`:
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* - @ must be at the start of the string or preceded by whitespace
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* - The query may contain spaces (historical persons commonly have multi-word
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* display names — "Auguste Raddatz", "Maria von Müller-Schultz")
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* - The query stops at a newline or at a second @ (the next mention starts)
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*/
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export function detectPersonMention(text: string, cursorPos: number): string | null {
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const before = text.slice(0, cursorPos);
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const atIndex = before.lastIndexOf('@');
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if (atIndex === -1) return null;
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if (atIndex > 0 && !/\s/.test(before[atIndex - 1])) return null;
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const query = before.slice(atIndex + 1);
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if (query.includes('\n') || query.includes('@')) return null;
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return query;
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}
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