Unexpected error while parsing widehat

[sethaxen]

julia> using MathTeXEngine

julia> generate_tex_elements(L"\hat{x}");  # fine

julia> generate_tex_elements(L"\widehat{x}");  # error
ERROR: TeXParseError: unexpected error while parsing
at position 9 (string index 9)
\widehat{x}
        ^
Stack before
[1] TeXExpr :expr


Stacktrace:
  [1] texparse(data::String; showdebug::Bool)
    @ MathTeXEngine ~/.julia/packages/MathTeXEngine/yfkMo/src/parser/parser.jl:303
  [2] texparse
    @ ~/.julia/packages/MathTeXEngine/yfkMo/src/parser/parser.jl:287 [inlined]
  [3] _broadcast_getindex_evalf
    @ ./broadcast.jl:670 [inlined]
  [4] _broadcast_getindex
    @ ./broadcast.jl:643 [inlined]
  [5] _getindex
    @ ./broadcast.jl:666 [inlined]
  [6] _broadcast_getindex
    @ ./broadcast.jl:642 [inlined]
  [7] getindex
    @ ./broadcast.jl:597 [inlined]
  [8] copy
    @ ./broadcast.jl:899 [inlined]
  [9] materialize
    @ ./broadcast.jl:860 [inlined]
 [10] generate_tex_elements(str::LaTeXStrings.LaTeXString, font_family::MathTeXEngine.FontFamily)
    @ MathTeXEngine ~/.julia/packages/MathTeXEngine/yfkMo/src/engine/layout.jl:301
 [11] generate_tex_elements(str::LaTeXStrings.LaTeXString)
    @ MathTeXEngine ~/.julia/packages/MathTeXEngine/yfkMo/src/engine/layout.jl:295
 [12] top-level scope
    @ REPL[6]:1

caused by: TeXParseError: unsupported command \widehat
at position 9 (string index 9)
\widehat{x}
        ^
Stack before
[1] TeXExpr :expr


Stacktrace:
  [1] _end_command_builder!(stack::DataStructures.Stack{Any}, p::Int64, data::String)
    @ MathTeXEngine ~/.julia/packages/MathTeXEngine/yfkMo/src/parser/parser.jl:251
  [2] macro expansion
    @ ~/.julia/packages/MathTeXEngine/yfkMo/src/parser/parser.jl:274 [inlined]
  [3] macro expansion
    @ ~/.julia/packages/Automa/1KOLQ/src/codegen.jl:149 [inlined]
  [4] texparse(data::String; showdebug::Bool)
    @ MathTeXEngine ~/.julia/packages/MathTeXEngine/yfkMo/src/parser/parser.jl:301
  [5] texparse
    @ ~/.julia/packages/MathTeXEngine/yfkMo/src/parser/parser.jl:287 [inlined]
  [6] _broadcast_getindex_evalf
    @ ./broadcast.jl:670 [inlined]
  [7] _broadcast_getindex
    @ ./broadcast.jl:643 [inlined]
  [8] _getindex
    @ ./broadcast.jl:666 [inlined]
  [9] _broadcast_getindex
    @ ./broadcast.jl:642 [inlined]
 [10] getindex
    @ ./broadcast.jl:597 [inlined]
 [11] copy
    @ ./broadcast.jl:899 [inlined]
 [12] materialize
    @ ./broadcast.jl:860 [inlined]
 [13] generate_tex_elements(str::LaTeXStrings.LaTeXString, font_family::MathTeXEngine.FontFamily)
    @ MathTeXEngine ~/.julia/packages/MathTeXEngine/yfkMo/src/engine/layout.jl:301
 [14] generate_tex_elements(str::LaTeXStrings.LaTeXString)
    @ MathTeXEngine ~/.julia/packages/MathTeXEngine/yfkMo/src/engine/layout.jl:295
 [15] top-level scope
    @ REPL[6]:1

julia> versioninfo()
Julia Version 1.8.4
Commit 00177ebc4fc (2022-12-23 21:32 UTC)
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-13.0.1 (ORCJIT, tigerlake)
  Threads: 8 on 8 virtual cores
Environment:
  JULIA_CMDSTAN_HOME = /home/sethaxen/software/cmdstan/2.30.1/
  JULIA_NUM_THREADS = auto
  JULIA_EDITOR = code

(jl_uI2CGX) pkg> st
Status `/tmp/jl_uI2CGX/Project.toml`
  [0a4f8689] MathTeXEngine v0.5.4

[theogf]

Got the same error, any clue on how to fix it?

[sethaxen]

I never found a solution. I just didn't use Makie for that plot.

[Kolaru]

Sorry for the long wait.

I'm fixing the displayed error in #109

For supporting the command, I have to think about it. After a quick research it looks like the \wide family just stretch the combining character to the size of whatever is under it. That will require a bit more time to implement.