Failed to parse markdown doc string

[domluna]

julia> s = String(read("test/files/PProf.jl"))
"module PProf\n\nexport pprof, @pprof\n\nusing Profile\nusing ProtoBuf\nusing OrderedCollections\n\nusing Profile: clear\n\n\"\"\"\n    PProf.clear()\n\nAlias for `Profile.clear()`\n\"\"\"\nclear\n\n# Load in `deps.jl`, complaining if it does not exist\nconst depsjl_path = joinpath(@__DIR__, \"..\", \"deps\", \"deps.jl\")\nif !isfile(depsjl_path)\n    error(\n        \"PProf not installed properly, run Pkg.build(\\\"PProf\\\"), restart Julia and try again\",\n " ⋯ 8539 bytes ⋯ "rof -http=\$webhost:\$webport \$file`))\nend\n\n\"\"\"\n    pprof_kill()\n\nKills the pprof server if running.\n\"\"\"\nfunction kill()\n    if proc[] !== nothing\n        Base.kill(proc[])\n        proc[] = nothing\n    end\nend\n\n\n\"\"\"\n    @pprof ex\n\nProfiles the expression using `@profile` and starts or restarts `pprof`.\n\"\"\"\nmacro pprof(ex)\n    esc(quote\n        \$Profile.@profile \$ex\n        \$(@__MODULE__).pprof()\n    end)\nend\n\nend # module\n"

julia> using JuliaSyntax

julia> JuliaSyntax.parseall(JuliaSyntax.GreenNode, s)
ERROR: ParseError:
# Error @ line 81:64

  - `data::Vector{UInt}`: The data provided by `Profile.fetch` \[optional\].
#                                                              └┘ ── invalid escape sequence
Stacktrace:
 [1] _parse(rule::Symbol, need_eof::Bool, ::Type{…}, text::String, index::Int64; version::VersionNumber, ignore_trivia::Bool, filename::Nothing, first_line::Int64, ignore_errors::Bool, ignore_warnings::Bool, kws::@Kwargs{})
   @ JuliaSyntax ~/.julia/packages/JuliaSyntax/BHOG8/src/parser_api.jl:93
 [2] _parse (repeats 2 times)
   @ ~/.julia/packages/JuliaSyntax/BHOG8/src/parser_api.jl:77 [inlined]
 [3] parseall(::Type{JuliaSyntax.GreenNode}, text::String)
   @ JuliaSyntax ~/.julia/packages/JuliaSyntax/BHOG8/src/parser_api.jl:143
 [4] top-level scope
   @ REPL[19]:1
Some type information was truncated. Use `show(err)` to see complete types.

https://github.com/domluna/JuliaFormatter.jl/blob/master/test/files/PProf.jl

It looks like the issue is markdown formatting. This is an old file so maybe it's formatted incorrectly? This parsed fine with CSTParser.

[pfitzseb]

This was always technically invalid:

❯ julia +1.0 -q
julia> """
         - `data::Vector{UInt}`: The data provided by `Profile.fetch` \[optional\].
       """
       function pprof() end
ERROR: syntax: invalid escape sequence

[domluna]

ok good to know. i guess this can be closed then.