flap is confused by the use of `\includesvg` as a parameter

[MayeulC]

To avoid compiling svgs during externalization, I have the following directive in my preamble:

\tikzset{external/optimize command away={\includesvg}{1}}

That confuses flap, which says ValueError: Unexpected END_GROUP '}' in file 00-includes/preamble.tex (line 101, column 54).

Backtrace

% flap -v main.tex flapped
FLaP 0.6.0
File                            Line Column LaTeX Command                      
-------------------------------------------------------------------------------
main.tex                          10      1 \input{00-includes/preamble.tex}   
Traceback (most recent call last):
  File "/home/mcantan/.local/bin/flap", line 8, in <module>
    sys.exit(main())
  File "/home/mcantan/.local/lib/python3.10/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/mcantan/.local/lib/python3.10/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/mcantan/.local/lib/python3.10/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/mcantan/.local/lib/python3.10/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/ui.py", line 117, in main
    .run(tex_file, output)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/ui.py", line 43, in run
    request.execute()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/engine.py", line 84, in execute
    tokens = self._rewrite(self.read_root_tex,
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/engine.py", line 94, in _rewrite
    return parser.rewrite()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 90, in rewrite
    result += self._rewrite_one()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 98, in _rewrite_one
    return self._rewrite_command()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 114, in _rewrite_command
    return macro.rewrite(self)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/macros/commons.py", line 54, in rewrite
    return self._execute(parser, invocation)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/macros/inlining.py", line 37, in _execute
    return parser._spawn(parser._create.as_tokens(content, link), dict()).rewrite()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 90, in rewrite
    result += self._rewrite_one()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 96, in _rewrite_one
    return self._rewrite_group()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 105, in _rewrite_group
    tokens += self._rewrite_one()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 96, in _rewrite_one
    return self._rewrite_group()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 105, in _rewrite_group
    tokens += self._rewrite_one()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 96, in _rewrite_one
    return self._rewrite_group()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 105, in _rewrite_group
    tokens += self._rewrite_one()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 98, in _rewrite_one
    return self._rewrite_command()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 114, in _rewrite_command
    return macro.rewrite(self)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/macros/commons.py", line 53, in rewrite
    invocation = self._parse(parser)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/macros/commons.py", line 64, in _parse
    self._capture_arguments(parser, invocation)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/macros/commons.py", line 127, in _capture_arguments
    invocation.append_argument("link", parser.capture_group())
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 237, in capture_group
    tokens = self._accept(lambda token: token.begins_a_group)
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 135, in _accept
    self._raise_unexpected_token()
  File "/home/mcantan/.local/lib/python3.10/site-packages/flap/latex/parser.py", line 144, in _raise_unexpected_token
    raise ValueError(error)
ValueError: Unexpected END_GROUP '}' in file 00-includes/preamble.tex (line 101, column 54).

I'll comment that line out and report the next error :)