Re: Learning how Lua filters work through Debugging?

[iandol <iandol-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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On Thursday, 27 June 2019 03:32:13 UTC+8, Albert Krewinkel wrote:
>
>
> This would be great. I never tried ZeroBrane, but reading about its 
> debugging feature makes me believe that debugging should be possible. 
> One problem might be that pandoc is not (yet) available as a Lua module: 
> you would have to setup pandoc as the Lua interpreter in ZeroBrane, and 
> I don't know how easy that is. 
>

 Thanks Albert! I tried ZeroBrane, using environment variables to access 
mobdebug and socket files to the path before running, and putting `
*require("mobdebug").start()*` in the script. Running pandoc normally from 
the commandline did trigger the Zerobrane Debug server, however although A 
could put a breakpoint in the main top-level code, I couldn't put a 
breakpoint within a function call nor step into the function from outside 
it (e.g. *function Emph(elem)*). I assumed Lua is V5.3 in Pandoc, is that 
correct? As I understand it, the remote debugger does not need to know 
Pandoc is hosting Lua, as the debugger communicates via a socket to the 
process. ZeroBrane is really nice, extremely fast and great documentation! 
So TLDR; is that the remote debugger does trigger without needing to 
specify Pandoc, but there was an issue with stepping into functions. 
ZeroBrane is close to being an ideal solution...

I also tried using Visual Studio Code and an extension that supports remote 
debug: https://github.com/actboy168/lua-debug — but instructions are in 
Chinese and I didn't have enough time to get it to work…

Thanks for the links to learning materials.

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