gtm appears to not work in a Cygwin environment

[dvklopfenstein]

Thank you so much for creating gtm and the vim plugin. GTM looks like it will be extremely useful and I would very much like to use it, but am having difficulties -- I see no .gtm/*.event files and no time tracking appears to be happening.

Hypothesis

Google's GO language does not properly handle directory and filenames in Cygwin and so gtm does not work in a Cygwin environment.

Request

Please add support for using gtm in a Cygwin environment (Linux-like feel while running native Windows)

Details

This is everything I tried before having the thought to try it in Linux --which worked: finally seeing ./.gtm/*.event files.

Sigh. I would so like to use gtm in both Linux and Cygwin.

I have used vim for a while, but this is my first plugin. Pathogen recommends:
For new users, I recommend using Vim's built-in package management instead. :help packages

$ gtm status

$ gtm --version
v1.3.5

$ find .gtm
.gtm
.gtm/terminal.app

$ vim --version
VIM - Vi IMproved 8.2 (2019 Dec 12, compiled Jul  7 2023 23:06:09)
Included patches: 1-4372
Modified by <cygwin@cygwin.com>
Compiled by <cygwin@cygwin.com>

To load the gtm plugin, I did:

$ git clone https://github.com/git-time-metric/gtm-vim-plugin.git ~/.vim/pack/gtm/start/gtm
$ find ~/.vim/pack/gtm/start/gtm/plugin/
/home/dvklo/.vim/pack/gtm/start/gtm/plugin/
/home/dvklo/.vim/pack/gtm/start/gtm/plugin/gtm.vim

In my .vimrc file, I set:
let g:gtm_plugin_status_enabled = 1

Then I edited a file in my repo:

$ vim -V9vim.log README.md

In vim, I do:

:set runtimepath?
~/.vim,~/.vim/pack/gtm/start/gtm,/usr/share/vim/vimfiles,/usr/share/vim/vim82,/usr/share/vim/vimfiles/after,~/.vim/after

:set packpath
packpath=~/.vim,/usr/share/vim/vimfiles,/usr/share/vim/vim82,/usr/share/vim/vimfiles/after,~/.vim/after

:scriptnames
  1: /etc/vimrc
  2: /usr/share/vim/vim82/syntax/syntax.vim
  3: /usr/share/vim/vim82/syntax/synload.vim
  4: /usr/share/vim/vim82/syntax/syncolor.vim
  5: /usr/share/vim/vim82/colors/lists/default.vim
  6: /usr/share/vim/vim82/filetype.vim
  7: /usr/share/vim/vim82/scripts.vim
  8: /usr/share/vim/vim82/autoload/dist/script.vim
  9: /usr/share/vim/vim82/ftplugin.vim
 10: ~/.vimrc
 11: /usr/share/vim/vim82/syntax/nosyntax.vim
 12: /usr/share/vim/vim82/plugin/getscriptPlugin.vim
 13: /usr/share/vim/vim82/plugin/gzip.vim
 14: /usr/share/vim/vim82/plugin/logiPat.vim
 15: /usr/share/vim/vim82/plugin/manpager.vim
 16: /usr/share/vim/vim82/plugin/matchparen.vim
 17: /usr/share/vim/vim82/plugin/netrwPlugin.vim
 18: /usr/share/vim/vim82/plugin/rrhelper.vim
 19: /usr/share/vim/vim82/plugin/spellfile.vim
 20: /usr/share/vim/vim82/plugin/tarPlugin.vim
 21: /usr/share/vim/vim82/plugin/tohtml.vim
 22: /usr/share/vim/vim82/plugin/vimballPlugin.vim
 23: /usr/share/vim/vim82/plugin/zipPlugin.vim
 24: ~/.vim/pack/gtm/start/gtm/plugin/gtm.vim
 25: /usr/share/vim/vim82/ftplugin/conf.vim
 26: /usr/share/vim/vim82/syntax/conf.vim

My vim.log file created with the -V9vim.log vim argument shows some activity with gtm:

chdir(/home/dvklo/.vim/pack/gtm/start)
fchdir() to previous dir
chdir(/home/dvklo/.vim/pack/gtm/start/gtm/plugin)
fchdir() to previous dir
sourcing "/home/dvklo/.vim/pack/gtm/start/gtm/plugin/gtm.vim"
finished sourcing /home/dvklo/.vim/pack/gtm/start/gtm/plugin/gtm.vim

I see calls to s:record():

Executing BufRead Autocommands for "*"
autocommand silent call s:record()

Calling shell to execute: "(gtm record --status '/cygdrive/c/Users/dvklo/Data/git/mednotes/README.md')>/tmp/vqLKKmp/0 2>&1"
Executing BufEnter Autocommands for "*"
autocommand sil call s:LocalBrowse(expand("<amatch>"))

Executing VimEnter Autocommands for "*"
autocommand sil call s:VimEnter(expand("<amatch>"))

Executing CursorMoved Autocommands for "*"
autocommand call s:Highlight_Matching_Pair()

Executing CursorMoved Autocommands for "*"
autocommand silent call s:record()