repl: fix preview cursor position

The cusor position was off in case the preview was exactly as long as the current terminal was wide. PR-URL: #31293 Fixes: #31291 Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
nodejs · Jan 16, 2020 · c252356 · c252356
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commit c252356
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Showing 4 changed files with 22 additions and 22 deletions.
diff --git a/lib/internal/repl/utils.js b/lib/internal/repl/utils.js
@@ -382,9 +382,9 @@ function setupPreview(repl, contextSymbol, bufferSymbol, active) {
       const { cursorPos, displayPos } = getPreviewPos();
       const rows = displayPos.rows - cursorPos.rows;
       moveCursor(repl.output, 0, rows);
-      const { cols: resultCols } = repl._getDisplayPos(result);
       repl.output.write(`\n${result}`);
-      moveCursor(repl.output, cursorPos.cols - resultCols, -rows - 1);
+      cursorTo(repl.output, cursorPos.cols);
+      moveCursor(repl.output, 0, -rows - 1);
     });
   };
 

diff --git a/test/parallel/test-repl-history-navigation.js b/test/parallel/test-repl-history-navigation.js
@@ -254,7 +254,7 @@ const tests = [
       // 360 % 250 + 2 === 112 (+1)
       `${prompt}${'veryLongName'.repeat(30)}`, '\x1B[113G',
       // "// 'I should be previewed'".length + 86 === 112 (+1)
-      "\n// 'I should be previewed'", '\x1B[86C\x1B[1A',
+      "\n// 'I should be previewed'", '\x1B[113G', '\x1B[1A',
       // Preview cleanup
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       // 4. WORD LEFT
@@ -263,51 +263,51 @@ const tests = [
       '\x1B[1A',
       '\x1B[1G', '\x1B[0J',
       `${prompt}${'veryLongName'.repeat(30)}`, '\x1B[3G', '\x1B[1A',
-      '\x1B[1B', "\n// 'I should be previewed'", '\x1B[24D\x1B[2A',
+      '\x1B[1B', "\n// 'I should be previewed'", '\x1B[3G', '\x1B[2A',
       // Preview cleanup
       '\x1B[2B', '\x1B[2K', '\x1B[2A',
       // 5. UP
       '\x1B[1G', '\x1B[0J',
       `${prompt}e`, '\x1B[4G',
       // '// RangeError: visible'.length - 19 === 3 (+1)
-      '\n// RangeError: visible', '\x1B[19D\x1B[1A',
+      '\n// RangeError: visible', '\x1B[4G', '\x1B[1A',
       // Preview cleanup
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       // 6. Backspace
       '\x1B[1G', '\x1B[0J',
       '> ', '\x1B[3G', 'x', '1',
       `\n// '${'あ'.repeat(124)}'`,
-      '\x1B[1C\x1B[1A',
+      '\x1B[5G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\x1B[1G', '\x1B[0J',
       '> x', '\x1B[4G', '2',
       `\n// '${'🐕'.repeat(124)}'`,
-      '\x1B[1C\x1B[1A',
+      '\x1B[5G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\x1B[1G', '\x1B[0J',
       '> x', '\x1B[4G', '3',
       `\n// '${'𐐷'.repeat(248)}'`,
-      '\x1B[1C\x1B[1A',
+      '\x1B[5G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\x1B[1G', '\x1B[0J',
       '> x', '\x1B[4G', '4',
       `\n// 'a${'\u0301'.repeat(1000)}'`,
-      '\x1B[2D\x1B[1A',
+      '\x1B[5G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\x1B[1G', '\x1B[0J',
       '> ', '\x1B[3G', 'y', '1',
       `\n// '${'あ'.repeat(121)}...`,
-      '\x1B[245D\x1B[1A',
+      '\x1B[5G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\x1B[1G', '\x1B[0J',
       '> y', '\x1B[4G', '2',
       `\n// '${'🐕'.repeat(121)}...`,
-      '\x1B[245D\x1B[1A',
+      '\x1B[5G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\x1B[1G', '\x1B[0J',
       '> y', '\x1B[4G', '3',
       `\n// '${'𐐷'.repeat(242)}...`,
-      '\x1B[245D\x1B[1A',
+      '\x1B[5G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\r\n',
       '\x1B[1G', '\x1B[0J',

diff --git a/test/parallel/test-repl-preview.js b/test/parallel/test-repl-preview.js
@@ -68,12 +68,12 @@ async function tests(options) {
   const testCases = [
     ['foo', [2, 4], '[Function: foo]',
      'foo',
-     '\x1B[90m[Function: foo]\x1B[39m\x1B[5D\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
+     '\x1B[90m[Function: foo]\x1B[39m\x1B[11G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[36m[Function: foo]\x1B[39m',
      '\x1B[1G\x1B[0Jrepl > \x1B[8G'],
     ['koo', [2, 4], '[Function: koo]',
      'k\x1B[90moo\x1B[39m\x1B[9G\x1B[0Ko\x1B[90mo\x1B[39m\x1B[10G\x1B[0Ko',
-     '\x1B[90m[Function: koo]\x1B[39m\x1B[5D\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
+     '\x1B[90m[Function: koo]\x1B[39m\x1B[11G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[36m[Function: koo]\x1B[39m',
      '\x1B[1G\x1B[0Jrepl > \x1B[8G'],
     ['a', [1, 2], undefined],
@@ -83,19 +83,19 @@ async function tests(options) {
      '\x1B[1G\x1B[0Jrepl > \x1B[8G'],
     ['1n + 2n', [2, 5], '\x1B[33m3n\x1B[39m',
      '1n + 2',
-     '\x1B[90mType[39m\x1B[57D\x1B[1A\x1B[1B\x1B[2K\x1B[1An',
-     '\x1B[90m3n\x1B[39m\x1B[12C\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
+     '\x1B[90mType[39m\x1B[14G\x1B[1A\x1B[1B\x1B[2K\x1B[1An',
+     '\x1B[90m3n\x1B[39m\x1B[15G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[33m3n\x1B[39m',
      '\x1B[1G\x1B[0Jrepl > \x1B[8G'],
     ['{ a: true };', [2, 4], '\x1B[33mtrue\x1B[39m',
      '{ a: tru\x1B[90me\x1B[39m\x1B[16G\x1B[0Ke };',
-     '\x1B[90mtrue\x1B[39m\x1B[15C\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
+     '\x1B[90mtrue\x1B[39m\x1B[20G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[33mtrue\x1B[39m',
      '\x1B[1G\x1B[0Jrepl > \x1B[8G'],
     [' \t { a: true};', [2, 5], '\x1B[33mtrue\x1B[39m',
      ' \t { a: tru\x1B[90me\x1B[39m\x1B[26G\x1B[0Ke}',
-     '\x1B[90m{ a: true }\x1B[39m\x1B[16C\x1B[1A\x1B[1B\x1B[2K\x1B[1A;',
-     '\x1B[90mtrue\x1B[39m\x1B[24C\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
+     '\x1B[90m{ a: true }\x1B[39m\x1B[28G\x1B[1A\x1B[1B\x1B[2K\x1B[1A;',
+     '\x1B[90mtrue\x1B[39m\x1B[29G\x1B[1A\x1B[1B\x1B[2K\x1B[1A\r',
      '\x1B[33mtrue\x1B[39m',
      '\x1B[1G\x1B[0Jrepl > \x1B[8G']
   ];

diff --git a/test/parallel/test-repl-reverse-search.js b/test/parallel/test-repl-reverse-search.js
@@ -223,7 +223,7 @@ const tests = [
       '\r\n',
       '\x1B[1G', '\x1B[0J',
       prompt, '\x1B[3G',
-      '1', '+', '1', '\n// 2', '\x1B[1C\x1B[1A',
+      '1', '+', '1', '\n// 2', '\x1B[6G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\r\n',
       '2\n',
@@ -239,7 +239,7 @@ const tests = [
       '2\n',
       '\x1B[1G', '\x1B[0J',
       prompt, '\x1B[3G',
-      '2', '\n// 2', '\x1B[1D\x1B[1A',
+      '2', '\n// 2', '\x1B[4G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\nbck-i-search: _', '\x1B[1A', '\x1B[4G',
       '\x1B[3G', '\x1B[0J',
@@ -252,7 +252,7 @@ const tests = [
       `${prompt}ab = "aaaa"`, '\x1B[14G',
       '\x1B[1G', '\x1B[0J',
       `${prompt}repl.repl.historyIndex`, '\x1B[25G', '\n// -1',
-      '\x1B[19C\x1B[1A',
+      '\x1B[25G', '\x1B[1A',
       '\x1B[1B', '\x1B[2K', '\x1B[1A',
       '\nfwd-i-search: _', '\x1B[1A', '\x1B[25G',
       '\x1B[3G', '\x1B[0J',