Vim-plug update step doesn't report errors

[Popkornium18]

I just realized that topgrade never upgraded my neovim plugins but still reported that everything went fine. It just says:

―― 11:57:34 - Neovim 
Plugins upgraded

However if I dry run topgrade and manually run the command (on Arch) this happens:

$ /usr/bin/nvim -u /home/user/.config/nvim/init.vim -U NONE -V1 -nNesS /tmp/.tmpKhasCa
not found in 'packpath': "pack/*/start/*"
not found in 'packpath': "pack/*/start/matchit"
not found in 'packpath': "pack/*/start/*"
not found in 'runtimepath': "plugin/**/*.vim"
Reading ShaDa file "/home/user/.local/share/nvim/shada/main.shada" info marks oldfiles
line 0: could not source "/tmp/.tmpKhasCa"
Error detected while processing command line:
E484: Can't open file /tmp/.tmpKhasCa
Entering Ex mode.  Type "visual" to go to Normal mode.
:
:
:
Writing ShaDa file "/home/user/.local/share/nvim/shada/main.shada"

Additional details:

• Which operating system or Linux distribution are you using?
  Arch Linux and Ubuntu
• How did you install Topgrade?
  On Arch from the AUR and on Ubuntu from GitHub. Both have the same issue.

On Ubuntu:

 2021-05-26T10:02:18.038Z DEBUG topgrade::steps::vim > Wrote vim script to "/tmp/.tmphsAwkQ"
not found in 'packpath': "pack/*/start/*"
not found in 'packpath': "pack/*/start/matchit"
not found in 'packpath': "pack/*/start/*"
not found in 'runtimepath': "plugin/**/*.vim"
Reading ShaDa file "/home/user/.local/share/nvim/shada/main.shada" info marks oldfiles
Plug
Downloading the latest version of vim-plugvim-plug is already up-to-date
not found in 'runtimepath': "ftplugin/vim-plug.vim ftplugin/vim-plug_*.vim ftplugin/vim-plug/*.vim"
not found in 'runtimepath': "indent/vim-plug.vim"
not found in 'runtimepath': "syntax/vim-plug.vim syntax/vim-plug/*.vim"Error detected while processing function 2_update[1]..2_update_impl[115]..2_nvim_cb[1]..2_job_cb[4]..2_job_out_cb[10]..2_log[4]..2_nvim_cb[1]..2_job_cb[4]..2_job_exit_cb[3]..2_reap[12]..2_bar:
line    3:
E440: undo line missingPlugins upgraded

On Arch:

 2021-05-26T10:03:21.931Z DEBUG topgrade::steps::vim       > Wrote vim script to "/tmp/.tmpxLfMDm"
not found in 'packpath': "pack/*/start/*"
not found in 'packpath': "pack/*/start/matchit"
not found in 'packpath': "pack/*/start/*"
not found in 'runtimepath': "plugin/**/*.vim"
Reading ShaDa file "/home/user/.local/share/nvim/shada/main.shada" info marks oldfiles
Plug
Downloading the latest version of vim-plugvim-plug is already up-to-date
not found in 'runtimepath': "ftplugin/vim-plug.vim ftplugin/vim-plug_*.vim ftplugin/vim-plug/*.vim"
not found in 'runtimepath': "indent/vim-plug.vim"
not found in 'runtimepath': "syntax/vim-plug.vim syntax/vim-plug/*.vim"Error detected while processing function 2_update[1]..2_update_impl[115]..2_nvim_cb[1]..2_job_cb[4]..2_job_out_cb[10]..2_log[4]..2_nvim_cb[1]..2_job_cb[4]..2_job_exit_cb[3]..2_reap[12]..2_bar:
line    3:
E440: undo line missingPlugins upgraded

[r-darwish]

The way Topgrade checks for failure is by checking the program's exit code, as it does for Vim too. If you're not seeing an error it means that Vim returned 0 dispite the failure. this is the Vim script used to upgrade packages. I'm not a Vim expert in any way. Does anyone know of a way to fix the script to cause Vim to return non-zero exist code on errors?

[SuperSandro2000]

I am not sure why this sometimes fails. When I run topgrade --only vim it works but when I run it all together it doesn't.

[SuperSandro2000]

I don't think the vim upgrade is failing but something is calling a git log (git log --pretty=format:%h HEAD...HEAD@{1}) which opens a prompt or an pager which is not closed. I can press y to retry as much as I want but no new processes are created but when I press once enter topgrade just continues.

[Corey-Keller]

@r-darwish to exit with a non 0 exit status, use cq (see :help cq in vim), also, please see #756 for fixing issues with Packer specifically)

EDIT: @wbthomason #756 doesn't actually fix Packer (not for me at least).

[wbthomason]

@Corey-Keller Can you elaborate (maybe over at #756)?

[Corey-Keller]

@wbthomason can done!