feat: add dot option to treat dots as normal characters

README.md

@@ -29,13 +29,14 @@ markdownlint --help
 
     -h, --help                                  output usage information
     -V, --version                               output the version number
-    -f, --fix                                   fix basic errors (does not work with STDIN)
-    -s, --stdin                                 read from STDIN (does not work with files)
-    -o, --output [outputFile]                   write issues to file (no console)
     -c, --config [configFile]                   configuration file (JSON, JSONC, JS, or YAML)
+    -d, --dot                                   include files/folders with a dot (for example `.github`)
+    -f, --fix                                   fix basic errors (does not work with STDIN)
     -i, --ignore [file|directory|glob]          file(s) to ignore/exclude
+    -o, --output [outputFile]                   write issues to file (no console)
     -p, --ignore-path [file]                    path to file with ignore pattern(s)
     -r, --rules  [file|directory|glob|package]  custom rule files
+    -s, --stdin                                 read from STDIN (does not work with files)
 ```
 
 ### Globbing

markdownlint.js

@@ -78,6 +78,7 @@ function readConfiguration(args) {
 
 function prepareFileList(files, fileExtensions, previousResults) {
   const globOptions = {
+    dot: !!options.dot,
     nodir: true
   };
   let extensionGlobPart = '*.';
@@ -187,13 +188,14 @@ program
   .version(pkg.version)
   .description(pkg.description)
   .usage('[options] <files|directories|globs>')
-  .option('-f, --fix', 'fix basic errors (does not work with STDIN)')
-  .option('-s, --stdin', 'read from STDIN (does not work with files)')
-  .option('-o, --output [outputFile]', 'write issues to file (no console)')
   .option('-c, --config [configFile]', 'configuration file (JSON, JSONC, JS, or YAML)')
+  .option('-d, --dot', 'include files/folders with a dot (for example `.github`)')
+  .option('-f, --fix', 'fix basic errors (does not work with STDIN)')
   .option('-i, --ignore [file|directory|glob]', 'file(s) to ignore/exclude', concatArray, [])
+  .option('-o, --output [outputFile]', 'write issues to file (no console)')
   .option('-p, --ignore-path [file]', 'path to file with ignore pattern(s)')
-  .option('-r, --rules  [file|directory|glob|package]', 'custom rule files', concatArray, []);
+  .option('-r, --rules  [file|directory|glob|package]', 'custom rule files', concatArray, [])
+  .option('-s, --stdin', 'read from STDIN (does not work with files)');
 
 program.parse(process.argv);
 

test/.folder/.file-with-dot.md

@@ -0,0 +1,8 @@
+## header 2
+# header
+
+```fence
+$ code
+```
+
+text

test/.folder/incorrect-dot.md

@@ -0,0 +1,26 @@
+## header 2
+# header
+
+```fence
+$ code
+```
+
+text
+
+```fence
+$ code
+```
+
+text
+
+```fence
+$ code
+```
+
+text
+
+```fence
+$ code
+```
+
+text

test/test.js

@@ -740,3 +740,23 @@ test('Linter text file --output must end with EOF newline', async t => {
     fs.unlinkSync(output);
   }
 });
+
+test('--dot option to include folders/files with a dot', async (t) => {
+  try {
+    await execa('../markdownlint.js',
+      ['--config', 'test-config.json', '--dot', '**/incorrect-dot.md', '**/.file-with-dot.md', '**/correct.md'],
+      {stripFinalNewline: false});
+    t.fail();
+  } catch (error) {
+    t.is(error.stdout, '');
+    t.is(error.stderr.match(errorPattern).length, 13);
+  }
+});
+
+test('without --dot option exclude folders/files with a dot', async (t) => {
+  const result = await execa('../markdownlint.js',
+    ['--config', 'test-config.json', '**/incorrect-dot.md', '**/.file-with-dot.md', '**/correct.md'],
+    {stripFinalNewline: false});
+  t.is(result.stdout, '');
+  t.is(result.stderr, '');
+});