improve ValueParser, handle escaped characters

Before this, `--width-1\/2` would be handled as: ```json [ { kind: 'word', value: '--width-\\' } { kind: 'separator', value: '/' } { kind: 'word', value: '2' } ] ``` But now it will be handled as: ```json [ { kind: 'word', value: '--width-\\/2' } ] ```

Author: RobinMalfait

packages/tailwindcss/src/value-parser.ts

@@ -149,6 +149,14 @@ export function parse(input: string) {
  let currentChar = input.charCodeAt(i)
 
  switch (currentChar) {
+ // Current character is a `\` therefore the next character is escaped,
+ // consume it together with the next character and continue.
+ case BACKSLASH: {
+ buffer += input[i] + input[i + 1]
+ i++
+ break
+ }
+
  // Space and commas are bundled into separators
  //
  // E.g.: