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refactor(matrix): clarify mention prefix stripping

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This commit is contained in:
Gustavo Madeira Santana
2026-04-19 15:39:47 -04:00
parent b751fbc134
commit b7ecf8d871
1 changed files with 35 additions and 35 deletions
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70
extensions/matrix/src/matrix/monitor/mentions.ts
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@@ -66,25 +66,36 @@ function escapeRegExp(value: string): string {
return value.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
}
function appendUniqueMentionCandidate(
candidates: string[],
seen: Set<string>,
candidate?: string | null,
) {
const trimmed = candidate?.trim();
if (!trimmed) {
return;
}
const normalized = normalizeLowercaseStringOrEmpty(trimmed);
if (seen.has(normalized)) {
return;
}
seen.add(normalized);
candidates.push(trimmed);
function resolveMatrixMentionPrefixCandidates(params: {
userId?: string | null;
displayName?: string | null;
}): string[] {
const candidates: string[] = [];
const seen = new Set<string>();
const append = (candidate?: string | null) => {
const trimmed = candidate?.trim();
if (!trimmed) {
return;
}
const normalized = normalizeLowercaseStringOrEmpty(trimmed);
if (seen.has(normalized)) {
return;
}
seen.add(normalized);
candidates.push(trimmed);
};
append(params.userId);
const localpart = params.userId ? resolveMatrixUserLocalpart(params.userId) : null;
append(localpart ? `@${localpart}` : null);
append(params.displayName);
append(params.displayName ? `@${params.displayName}` : null);
return candidates;
}
function stripNativeMatrixMentionPrefix(text: string, candidate: string): string | null {
const pattern = new RegExp(`^\\s*${escapeRegExp(candidate)}(?:\\s*[:,])?(?:\\s+|$)`, "i");
function stripMatchedMatrixMentionPrefix(text: string, pattern: RegExp): string | null {
const match = text.match(pattern);
if (!match) {
return null;
@@ -92,14 +103,15 @@ function stripNativeMatrixMentionPrefix(text: string, candidate: string): string
return text.slice(match[0].length).trimStart();
}
function stripNativeMatrixMentionPrefix(text: string, candidate: string): string | null {
const pattern = new RegExp(`^\\s*${escapeRegExp(candidate)}(?:\\s*[:,])?(?:\\s+|$)`, "i");
return stripMatchedMatrixMentionPrefix(text, pattern);
}
function stripRegexMatrixMentionPrefix(text: string, pattern: RegExp): string | null {
const flags = pattern.flags.replace(/[gy]/g, "");
const anchored = new RegExp(`^\\s*(?:${pattern.source})(?:\\s*[:,])?(?:\\s+|$)`, flags);
const match = text.match(anchored);
if (!match) {
return null;
}
return text.slice(match[0].length).trimStart();
return stripMatchedMatrixMentionPrefix(text, anchored);
}
export function stripMatrixMentionPrefix(params: {
@@ -113,19 +125,7 @@ export function stripMatrixMentionPrefix(params: {
return text;
}
const candidates: string[] = [];
const seen = new Set<string>();
appendUniqueMentionCandidate(candidates, seen, params.userId);
const localpart = params.userId ? resolveMatrixUserLocalpart(params.userId) : null;
appendUniqueMentionCandidate(candidates, seen, localpart ? `@${localpart}` : null);
appendUniqueMentionCandidate(candidates, seen, params.displayName);
appendUniqueMentionCandidate(
candidates,
seen,
params.displayName ? `@${params.displayName}` : null,
);
for (const candidate of candidates) {
for (const candidate of resolveMatrixMentionPrefixCandidates(params)) {
const stripped = stripNativeMatrixMentionPrefix(text, candidate);
if (stripped !== null) {
return stripped;