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readline: fix the REPL on editor mode crashing during tab completion #43543

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merged 1 commit into from
Jun 28, 2022
+24 −0
Merged

readline: fix the REPL on editor mode crashing during tab completion #43543

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3 changes: 3 additions & 0 deletions lib/internal/readline/utils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -366,6 +366,9 @@ function* emitKeys(stream) {

// This runs in O(n log n).
function commonPrefix(strings) {
if (strings.length === 0) {
return '';
}
if (strings.length === 1) {
return strings[0];
}
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21 changes: 21 additions & 0 deletions test/parallel/test-repl-tab-complete-on-editor-mode.js
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@@ -0,0 +1,21 @@
'use strict';

require('../common');
const ArrayStream = require('../common/arraystream');
const repl = require('repl');

const stream = new ArrayStream();
const replServer = repl.start({
input: stream,
output: stream,
terminal: true,
});

// Editor mode
replServer.write('.editor\n');

// Regression test for https://github.com/nodejs/node/issues/43528
replServer.write('a');
replServer.write(null, { name: 'tab' }); // Should not throw

replServer.close();