escape character with brace syntax breaks glob match

[magicdawn]

Bug

escape character with brace syntax breaks glob match

Reproduce Link

https://stackblitz.com/edit/fast-glob-quote-issue-mj24gmzv?file=index.js

import fg from 'fast-glob';
const { glob } = fg;

// .{txt}
{
  const files = await glob(`./files/*\\[id\\]*.{txt}`);
  console.log(`fast-glob using \`brace{}\` for extension`, { files });
}
{
  const files = await glob(`./files/*${fg.escapePath('[id]')}*.{txt}`);
  console.log(`fast-glob using \`brace{}\` for extension`, { files });
}

// .(txt)
{
  const files = await glob(`./files/*\\[id\\]*.(txt)`);
  console.log(`fast-glob using \`regex group()\` for extension`, { files });
}
{
  const files = await glob(`./files/*${fg.escapePath('[id]')}*.(txt)`);
  console.log(`fast-glob using \`regex group()\` for extension`, { files });
}

// .@(txt)
{
  const files = await glob(`./files/*\\[id\\]*.@(txt)`);
  console.log(`fast-glob using \`extglob @()\` for extension`, { files });
}
{
  const files = await glob(`./files/*${fg.escapePath('[id]')}*.@(txt)`);
  console.log(`fast-glob using \`extglob @()\` for extension`, { files });
}

result

fast-glob using `brace{}` for extension { files: [] }
fast-glob using `brace{}` for extension { files: [] }
fast-glob using `regex group()` for extension {
  files: [ './files/some [id] foo.txt', "./files/some [id]'s file.txt" ]
}
fast-glob using `regex group()` for extension {
  files: [ './files/some [id] foo.txt', "./files/some [id]'s file.txt" ]
}
fast-glob using `extglob @()` for extension {
  files: [ './files/some [id] foo.txt', "./files/some [id]'s file.txt" ]
}
fast-glob using `extglob @()` for extension {
  files: [ './files/some [id] foo.txt', "./files/some [id]'s file.txt" ]
}

What's happening

when filename includes [], use manual escape \\[id\\] or fg.escapePath('[id]') + brace .{txt} will result an empty match. but it's ok when change .{txt} to .(txt) or .@(txt)

here using single .txt extension is simplified for for demo purpose.