--- /dev/null
+# selector-id-pattern
+
+Specify a pattern for id selectors.
+
+```css
+.foo, #bar.baz a, #hoo[disabled] { color: pink; }
+/** ↑ ↑
+ * These id selectors */
+```
+
+## Options
+
+`regex|string`
+
+A string will be translated into a RegExp — `new RegExp(yourString)` — so *be sure to escape properly*.
+
+The selector value *after `#`* will be checked. No need to include `#` in your pattern.
+
+Given the string:
+
+```js
+"foo-[a-z]+"
+```
+
+The following patterns are considered violations:
+
+```css
+#foop {}
+```
+
+```css
+#foo-BAR {}
+```
+
+```css
+div > .zing + #foo-BAR {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+#foo-bar {}
+```
+
+```css
+div > .zing + #foo-bar {}
+```
+
+```css
+.foop {}
+```
+
+```css
+[foo='bar'] {}
+```