Update README

Author: stsewd

README.md

@@ -10,13 +10,19 @@ Check the playground at <https://stsewd.dev/tree-sitter-comment/>.
 Since comment tags aren't a programming language or have a standard,
 I have chosen to follow popular conventions for the syntax.
 
+### Comment tags
+
 * Comment tags can contain:
   - Upper case ascii letters
   - Numbers (can't start with one)
   - `-`, `_` (they can't start or end whit these characters)
 * Optionally can have an user linked to the tag inside parentheses `()`
 * The name must be followed by `:` and a whitespace
 
+### URIs
+
+* http and https links are recognized
+
 If you think there are other popular conventions this syntax doesn't cover,
 feel free to open a issue.
 
@@ -33,12 +39,37 @@ XXX:    extra white spaces.
 
 NOTE-BUG (stsewd): tags can be separated by `-`
 NOTE_BUG: or by `_`.
+
+This will be recognized as a URI
+https://github.com/stsewd/
+```
+
+## FAQ
+
+### Can I match a tag that doesn't end in `:`, like `TODO`?
+
+This grammar doesn't provide a specific token for it,
+but you can match it with this query:
+
+```scm
+("text" @todo
+ (#eq? @todo "TODO"))
 ```
 
-## TODO
+### Can I highlight references to issues, PRs, MRs, like `#10` or `!10`?
 
-- Detect links?
-- Detect tags that start with `#` (like when linking to a PR)?
+This grammar doesn't provide a specific token for it,
+but you can match it with this query:
+
+```scm
+("text" @issue
+ (#match? @issue "^#[0-9]+$"))
+
+;; NOTE: This matches `!10` and `! 10`.
+("text" @symbol . "text" @issue
+ (#eq? @symbol "!")
+ (#match? @issue "^[0-9]+$"))
+```
 
 ## Why C?
 

test/corpus/source.txt

@@ -92,7 +92,7 @@ URI: https://user:[email protected]/org/repo/?foo=baz
 
 (https://example.com/foo/bar/)
 
-URI(me): (https://example.com/foo/bar/?foo=bar)
+URI(me): (https://github.com/stsewd/?foo=bar#baz)
 
 --------------------------------------------------------------------------------
 
@@ -107,4 +107,8 @@ URI(me): (https://example.com/foo/bar/?foo=bar)
   (tag
     (name))
   (uri)
+  (uri)
+  (tag
+    (name)
+    (user))
   (uri))