fix for Windows support

[TimothyGCY]

LC_ALL seems to be unix environment variable, getting unknown command for Windows machine

[balintkissdev]

@TimothyGCY Coincidentally I created my own Powershell patch too on my fork because I wanted a Neovim setup on Windows following this guide: https://blog.nikfp.com/how-to-install-and-set-up-neovim-on-windows

Hint: prepending instead can avoid code duplication:

let l:command = 'git -C ' . l:dir_path . ' --no-pager blame --line-porcelain -L ' . a:line_number . ',' . l:end_line . ' -- ' . l:file_path_escaped
if !s:is_windows
  let l:command = 'LC_ALL=C ' . l:command
endif

[balintkissdev]

Closes #50

[balintkissdev]

@APZelos @georgesofianosgr Tested @TimothyGCY 's fix on Windows 10 + PowerShell 7.4.6 + Terminal Preview.

calling blamer#GetMessages('E:/PROGRAMMING/OPEN_SOURCE/blamer.nvim/autoload/blamer.vim', 1, 1)

line 1:   let l:dir_path = shellescape(s:substitute_path_separator(expand('%:h')))
calling <SNR>15_substitute_path_separator('E:/PROGRAMMING/OPEN_SOURCE/blamer.nvim/autoload')

line 1:   return s:is_windows ? substitute(a:path, '\\', '/', 'g') : a:path
<SNR>15_substitute_path_separator returning 'E:/PROGRAMMING/OPEN_SOURCE/blamer.nvim/autoload'

continuing in blamer#GetMessages

line 2:   let l:end_line = a:line_number + a:line_count - 1
line 3:   let l:file_path_escaped = shellescape(a:file)
line 4:   let l:command = 'git -C ' . l:dir_path . ' --no-pager blame --line-porcelain -L ' . a:line_number . ',' . l:end_line . ' -- ' . l:file_path_escaped
line 5:   let l:result = system(l:command)
Executing command: "'cmd.exe' '/s' '/c' '"git -C "E:/PROGRAMMING/OPEN_SOURCE/blamer.nvim/autoload" --no-pager blame --line-porcelain -L 1,1 -- "E:/PROGRAMMING/OPEN_SOURCE/blamer.nvim/autoload/blamer.vim""'"

Tested on Ubuntu on Windows Subsystem for Linux (WSL):

calling blamer#GetMessages('/home/bkiss/dotfiles/.config/nvim/init.lua', 1, 1)

line 1:   let l:dir_path = shellescape(s:substitute_path_separator(expand('%:h')))
calling <SNR>9_substitute_path_separator('/home/bkiss/dotfiles/.config/nvim')

line 1:   return s:is_windows ? substitute(a:path, '\\', '/', 'g') : a:path
<SNR>9_substitute_path_separator returning '/home/bkiss/dotfiles/.config/nvim'

continuing in blamer#GetMessages

line 2:   let l:end_line = a:line_number + a:line_count - 1
line 3:   let l:file_path_escaped = shellescape(a:file)
line 4:   let l:command = 'LC_ALL=C git -C ' . l:dir_path . ' --no-pager blame --line-porcelain -L ' . a:line_number . ',' . l:end_line . ' -- ' . l:file_path_escaped
line 5:   let l:result = system(l:command)
Executing command: "'/bin/bash' '-c' 'LC_ALL=C git -C '/home/bkiss/dotfiles/.config/nvim' --no-pager blame --line-porcelain -L 1,1 -- '/home/bkiss/dotfiles/.config/nvim/init.lua''"

Both are working.

[TimothyGCY]

@TimothyGCY Coincidentally I created my own Powershell patch too on my fork because I wanted a Neovim setup on Windows following this guide: https://blog.nikfp.com/how-to-install-and-set-up-neovim-on-windows

Hint: prepending instead can avoid code duplication:

let l:command = 'git -C ' . l:dir_path . ' --no-pager blame --line-porcelain -L ' . a:line_number . ',' . l:end_line . ' -- ' . l:file_path_escaped

if !s:is_windows

  let l:command = 'LC_ALL=C ' . l:command

endif

That's good for me to learn about proper way of string manipulation in Lua

Lua may not be my day-to-day used language, so I just did it in the simplest way I could understand.

Thanks buddy