RBuildTags gives message: 'file "etags" exists ...' but it doesn't.

[rg-ch]

I've created a newdirectory
and I copied myfunc.R inside
opend it with nvim myfunc.R
launched R

:RBuildTags gives me the following messages

The file "etags" exists. Please, delete it and try again.

see below.

I found the same message here below but I can't find an etags file in the directory to delete.
Corresponding to the help message RBuildTags only creates etags files in the working directory, doesn't it ?

Can you reproduce this. Can You tell me if etags works also for Rmd and Rnw files or is it limited to R and r files (default pattern in rtag).

Thanks in advance !

[jalvesaq]

I didn't try to reproduce... When I read the first sentence of the bug report, I already knew what was causing the problem: In Lua, 0 evaluates to true. I made this mistake many times when translating from VimScript to Lua. The bug has been there since February 2024. Please, try the branch "etags".

[rg-ch]

It tried the etags branch. It works now for R and r files. That's great ! Thanks you very much for your very fast reaction. I think the best way, is to source("myfunc.R") in Rmd-files in order to be able to use tags, isn't it ?
Or can I tag functions in rmd or rnw chunks including this extensions in the rtags pattern ?
I have no experience. What do you think ?

[jalvesaq]

I remember using this feature only very infrequently and a long time ago. The function was created with someone developing an R package in mind. The function should be helpful in the "R" directory. Possibly there is a better LSP alternative...

[jalvesaq]

Trying LSP (languageserver): if the buffer where the function is defined has been opened, you can jump to it. For example, I mapped gd to vim.lsp.buf.definition(). If I go to the nvimcom/R directory and open misc.R and then :e help.R, pressing gd in Normal mode over nvim.getclass will make the cursor jump to the function definition in misc.R.

[jalvesaq]

I'll merge the "etags" branch and close this issue. However the feature can be removed in the future if we agree that LSP is better. Currently, LSP recognizes R functions in Rmd files, but not in Quarto or Rnoweb ones.

Thanks for reporting the bug and for trying the branch!

[rg-ch]

You're welcome. Thanks for all your explanations. I think I need first to setup LSP for tryout, but I didn't find a simple setup and I'm a lua dummy.

Perhaps we shouldn't remove RBuildTags because it creates recursively all tags, even for simple variable creation without opening any R file. And it works in Rnw.

Would LSP also find rf_Stats in the following declaration.

I remind you that I have no idea about the capacity of languageserver. You surely better know what to keep and to remove.
Best regards Roman

[PMassicotte]

I agree that this could be eventually be removed. air lsp will eventually add more stuff and made navigation much easier.

[rg-ch]

@PMassicotte : I can't find a minimal configuration for air lsp on r.nvim. I found only the following Note: If you are using the languageserver package, you should disable its auto completion feature in your ~/.Rprofile to get completions from cmp-r.

[PMassicotte]

Air only format code at the moment. They are working to add more capabilities.

[PMassicotte]

See posit-dev/air#270

[rg-ch]

OK thanks a lot for the indication.

[PMassicotte]

As mentioned by @jalvesaq, you could try to install rlanguageserver, it works relatively well for some operation, like going to definition, reference, renaming, etc. Please let us know how it goes.