What version of prettier-plugin-tailwindcss are you using?

v0.6.4

What version of Tailwind CSS are you using?

v3.4.3

What version of Node.js are you using?

v20.12.1

What package manager are you using?

pnpm

What operating system are you using?

Linux / Ubuntu

Reproduction URL

Because the reproduction code is so small I skipped creating a repo. If you want me to I can make one though.

Code at start:

const Test = () => {
  return <div className="after:content-['\2026']" />;
};

Code after 1st run:

const Test = () => {
  return <div className="after:content-['\\2026']" />;
};

Code after 2nd run:

const Test = () => {
  return <div className="after:content-['\\\\2026']" />;
};

Describe your issue

I just updated from 0.5.10 to 0.6.4 and suddenly the backslash in the code snippet above kept multiplying itself(s). Versions 0.6.4, 0.6.3, 0.6.2 are affected. 0.6.1 is ok.

I did not except the backslash(es) for the octal escape sequence to be escaped again and again.

Repro:

1. Install prettier and plugin
2. Create file with content from above
3. Run prettier multiple times and set the backslashes comin in