LoadError on indented & improperly closed blocks

[hydrobeam]

Description

When a block element is indented, immediately after an item and not closed off with its respective #+end_NAME, the parser errors. The error does not occur if the elements are not in a list like so:

julia> org"
   post
         #+begin_src python
                       good?
         #+end_example
   prev       
"

Not-indented

Parses fine, and outputs warnings

julia> org"
       - one
       #+begin_src python
                       good?
       #+end_example
       - two
       "
┌ Warning: The following line is being coerced to a paragraph:
│
│ #+begin_src python
│ (line 3, column 1, char 8)
│
│ This is unusual, and likely caused by a malformed Org document.
└ @ Org ~/.julia/packages/Org/MBnbC/src/parse/consumers.jl:333
┌ Warning: The following line is being coerced to a paragraph:
│
│ #+end_example
│ (line 5, column 1, char 49)
│
│ This is unusual, and likely caused by a malformed Org document.
└ @ Org ~/.julia/packages/Org/MBnbC/src/parse/consumers.jl:333

Indented in a list

julia> org"
       - one
         #+begin_src python
                       good?
         #+end_example
       - two
       "

ERROR: LoadError: MethodError: Cannot `convert` an object of type Nothing to an object of type Org.Component

Closest candidates are:
  convert(::Type{Org.Component}, ::Markdown.Header{level}) where level
   @ Org ~/.julia/packages/Org/MBnbC/src/parse/markdown.jl:36
  convert(::Type{Org.Component}, ::Markdown.Italic)
   @ Org ~/.julia/packages/Org/MBnbC/src/parse/markdown.jl:54
  convert(::Type{Org.Component}, ::Markdown.Admonition)
   @ Org ~/.julia/packages/Org/MBnbC/src/parse/markdown.jl:101
  ...

Stacktrace:
  [1] push!(a::Vector{Org.Component}, item::Nothing)
    @ Base ./array.jl:1060
  [2] consume(#unused#::Type{Org.Item}, text::SubString{String})
    @ Org ~/.julia/packages/Org/MBnbC/src/parse/consumers.jl:218
  [3] consume(#unused#::Type{Org.List}, text::SubString{String})
    @ Org ~/.julia/packages/Org/MBnbC/src/parse/consumers.jl:244
  [4] parseorg(content::SubString{String}, typematchers::Dict{Char, Vector{<:Type}}, typefallbacks::Vector{DataType}; debug::Bool, partial::Bool, maxobj::Int64)
    @ Org ~/.julia/packages/Org/MBnbC/src/parse/parser.jl:49
  [5] parseorg
    @ ~/.julia/packages/Org/MBnbC/src/parse/parser.jl:22 [inlined]
  [6] Org.Section(components::Vector{Union{Nothing, SubString{String}}})
    @ Org ~/.julia/packages/Org/MBnbC/src/parse/interpret.jl:102
  [7] consume(component::Type{Org.Section}, text::SubString{String})
    @ Org ~/.julia/packages/Org/MBnbC/src/parse/consumers.jl:10
  [8] parseorg(content::SubString{String}, typematchers::Dict{Char, Vector{DataType}}, typefallbacks::Vector{DataType}; debug::Bool, partial::Bool, maxobj::Int64)
    @ Org ~/.julia/packages/Org/MBnbC/src/parse/parser.jl:59
  [9] parseorg
    @ ~/.julia/packages/Org/MBnbC/src/parse/parser.jl:22 [inlined]
 [10] #parseorg#38
    @ ~/.julia/packages/Org/MBnbC/src/parse/parser.jl:106 [inlined]
 [11] parseorg
    @ ~/.julia/packages/Org/MBnbC/src/parse/parser.jl:104 [inlined]
 [12] parse(#unused#::Type{OrgDoc}, content::String)
    @ Org ~/.julia/packages/Org/MBnbC/src/parse/interpret.jl:66
 [13] var"@org_str"(__source__::LineNumberNode, __module__::Module, content::String, type::String)
    @ Org ~/.julia/packages/Org/MBnbC/src/Org.jl:32
 [14] var"@org_str"(__source__::LineNumberNode, __module__::Module, content::String)
    @ Org ~/.julia/packages/Org/MBnbC/src/Org.jl:25
in expression starting at REPL[17]:1

Indented in a list, but not immediately after

This parses fine:

julia> org"
       - one

          #+begin_src python
                       good?
          #+end_example
       - two
       "

[tecosaur]

Thanks for the report. I actually plan on rewriting the parser in the future (this was my first attempt ever writing one), and I think I'll address this then.

This will take a while to get to (about a year and a bit I'll guess), short of getting a cloning machine, full-time-work-level donations, or losing the need to sleep.