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fix: only match nostr entities at word boundaries in paste handler

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Updates the paste handler regex to only match nostr bech32 entities
(npub, note, nevent, naddr, nprofile) when surrounded by whitespace or
at string boundaries. This prevents URLs containing nostr entities
(e.g., https://njump.me/npub1...) from being incorrectly converted
to mentions.

Uses a capture group (^|\s) instead of lookbehind assertion for
Safari compatibility (lookbehind only supported in Safari 16.4+).
This commit is contained in:
Claude
2026-01-22 10:56:15 +00:00
parent 7b7b24d41a
commit b002336cff
1 changed files with 15 additions and 9 deletions
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24
src/components/editor/extensions/nostr-paste-handler.ts
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@@ -39,8 +39,11 @@ export const NostrPasteHandler = Extension.create({
if (!text) return false;
// Regex to detect nostr bech32 strings (with or without nostr: prefix)
// Only match entities surrounded by whitespace or at string boundaries
// to avoid matching entities within URLs (e.g., https://njump.me/npub1...)
// Note: Using (^|\s) capture group instead of lookbehind for Safari compatibility
const bech32Regex =
/(?:nostr:)?(npub1[\w]{58,}|note1[\w]{58,}|nevent1[\w]+|naddr1[\w]+|nprofile1[\w]+)/g;
/(^|\s)(?:nostr:)?(npub1[\w]{58,}|note1[\w]{58,}|nevent1[\w]+|naddr1[\w]+|nprofile1[\w]+)(?=$|\s)/g;
const matches = Array.from(text.matchAll(bech32Regex));
if (matches.length === 0) return false; // No bech32 found, use default paste
@@ -50,13 +53,15 @@ export const NostrPasteHandler = Extension.create({
let lastIndex = 0;
for (const match of matches) {
const matchedText = match[0];
const fullMatch = match[0];
const boundary = match[1]; // Leading whitespace or empty (start of string)
const bech32 = match[2]; // The bech32 without nostr: prefix
const matchIndex = match.index!;
const bech32 = match[1]; // The bech32 without nostr: prefix
// Add text before this match
if (lastIndex < matchIndex) {
const textBefore = text.slice(lastIndex, matchIndex);
// Add text before this match (including the boundary whitespace)
const textBeforeEnd = matchIndex + boundary.length;
if (lastIndex < textBeforeEnd) {
const textBefore = text.slice(lastIndex, textBeforeEnd);
if (textBefore) {
nodes.push(view.state.schema.text(textBefore));
}
@@ -111,16 +116,17 @@ export const NostrPasteHandler = Extension.create({
// Add space after preview node
nodes.push(view.state.schema.text(" "));
} catch (err) {
// Invalid bech32, insert as plain text
// Invalid bech32, insert as plain text (entity portion without boundary)
console.warn(
"[NostrPasteHandler] Failed to decode:",
bech32,
err,
);
nodes.push(view.state.schema.text(matchedText));
const entityText = fullMatch.slice(boundary.length);
nodes.push(view.state.schema.text(entityText));
}
lastIndex = matchIndex + matchedText.length;
lastIndex = matchIndex + fullMatch.length;
}
// Add remaining text after last match