shelljs · nfischer · Jul 23, 2018 · Jul 19, 2018 · Jul 20, 2018 · Jul 20, 2018
diff --git a/README.md b/README.md
@@ -362,7 +362,8 @@ include the base directories (e.g., `lib/resources/file1` instead of just `file1
 Available options:

 + `-v`: Invert `regex_filter` (only print non-matching lines).
-+ `-l`: Print only filenames of matching files
+ `-l`: Print only filenames of matching files.
+ `-i`: Ignore case.

 Examples:


diff --git a/src/grep.js b/src/grep.js
@@ -7,6 +7,7 @@ common.register('grep', _grep, {
  cmdOptions: {
    'v': 'inverse',
    'l': 'nameOnly',
+    'i': 'ignoreCase',
  },
 });

@@ -17,7 +18,8 @@ common.register('grep', _grep, {
 //@ Available options:
 //@
 //@ + `-v`: Invert `regex_filter` (only print non-matching lines).
-//@ + `-l`: Print only filenames of matching files
+//@ + `-l`: Print only filenames of matching files.
+//@ + `-i`: Ignore case.
 //@
 //@ Examples:
 //@
@@ -41,6 +43,9 @@ function _grep(options, regex, files) {
  }

  var grep = [];
+  if (options.ignoreCase) {
+    regex = new RegExp(regex, 'i');
+  }
  files.forEach(function (file) {
    if (!fs.existsSync(file) && file !== '-') {
      common.error('no such file or directory: ' + file, 2, { continue: true });

diff --git a/test/grep.js b/test/grep.js
@@ -137,6 +137,13 @@ test('-l option', t => {
  t.is(result.split('\n').length - 1, 2);
 });

+test('-i option', t => {
+  const result = shell.grep('-i', 'test', 'test/resources/grep/case1', 'test/resources/grep/case1.txt',
+    'test/resources/grep/case1.js');
+  t.falsy(shell.error());
+  t.is(result.split('\n').length - 1, 3);
+});
+
 test('the pattern looks like an option', t => {
  const result = shell.grep('--', '-v', 'test/resources/grep/file2');
  t.falsy(shell.error());

diff --git a/test/resources/grep/case1 b/test/resources/grep/case1
@@ -0,0 +1 @@
+Test3
diff --git a/test/resources/grep/case1.js b/test/resources/grep/case1.js
@@ -0,0 +1 @@
+test3
diff --git a/test/resources/grep/case1.txt b/test/resources/grep/case1.txt
@@ -0,0 +1 @@
+TEST3