Parse escaped colons in class names correctly (#458)

* Parse escaped colons in classnames correctly * Run mix format
philss · May 19, 2023 · 46e8cc8 · 46e8cc8
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diff --git a/src/floki_selector_lexer.xrl b/src/floki_selector_lexer.xrl
@@ -20,6 +20,7 @@ Rules.
 {SYMBOL}                             : {token, {TokenChars, TokenLine}}.
 #{IDENTIFIER}                        : {token, {hash, TokenLine, tail(TokenChars)}}.
 \.{IDENTIFIER}                       : {token, {class, TokenLine, tail(TokenChars)}}.
+\.{IDENTIFIER}\\:{IDENTIFIER}        : {token, {class, TokenLine, tail(TokenChars)}}.
 \:{NOT}\(                            : {token, {pseudo_not, TokenLine}}.
 \:{IDENTIFIER}                       : {token, {pseudo, TokenLine, tail(TokenChars)}}.
 \({INT}\)                            : {token, {pseudo_class_int, TokenLine, list_to_integer(remove_wrapper(TokenChars))}}.

diff --git a/test/floki/selector/parser_test.exs b/test/floki/selector/parser_test.exs
@@ -22,6 +22,14 @@ defmodule Floki.Selector.ParserTest do
     end
   end
 
+  test "escaped colons in class names" do
+    tokens = tokenize("a.xs\\:red-500")
+
+    assert Parser.parse(tokens) == [
+             %Selector{type: "a", classes: ["xs\\:red-500"], pseudo_classes: []}
+           ]
+  end
+
   test "multiple selectors" do
     tokens = tokenize("ol, ul")