feat: add split_term_default_shell option

plugin/split-term.vim

@@ -1,6 +1,7 @@
 
 let s:force_vertical = exists('g:split_term_vertical') ? 1 : 0
 let s:map_keys = exists('g:disable_key_mappings') ? 0 : 1
+let s:default_shell = exists('g:split_term_default_shell') ? g:split_term_default_shell : 0
 
 " utilities around neovim's :term
 
@@ -54,11 +55,21 @@ fun! s:openTerm(args, count, vertical)
   let direction = s:force_vertical ? 1 : a:vertical
 
   call s:openBuffer(a:count, direction)
+
+  let prevShell = &shell
+  if exists('g:split_term_default_shell')
+    exe 'set shell =' . s:default_shell
+  endif
+
   exe 'terminal' a:args
   exe 'startinsert'
   if s:map_keys
     call s:defineMaps()
   endif
+
+  if exists('g:split_term_default_shell')
+    exe 'set shell =' . prevShell
+  endif
 endf
 
 command! -count -nargs=* Term call s:openTerm(<q-args>, <count>, 0)

readme.md

@@ -38,7 +38,7 @@ buffer experience.
 Install this plugin using your favorite plugin manager, or manually by
 extracting the files in your `~/.vim` or `~/.config/nvim` directory.
 
-    Plug 'mklabs/split-term.vim'
+    Plug 'vimlab/split-term.vim'
 
 ## Commands
 
@@ -72,15 +72,27 @@ REPL.
 
 ## Configuration
 
-- `g:split_term_vertical` - force the `:Term` command to always use a vertical
-  buffer (using `:vnew`)
-
-- `splitright/splitbelow` options can be used to configure the split buffer
+`splitright/splitbelow` options can be used to configure the split buffer
   orientation.
   - `set splitright` will put the new window right of the current one when using `:VTerm`
   - `set splitbelow` will put the new window below the current one when using `:Term`
 
-- `g:disable_key_mappings` - disable key mappings of the plugin
+`g:split_term_default_shell` - enables shell configuration specific to
+  split-term. It lets vim's `shell` configuration free to let other plugins
+  that might need it (such as ale or neomake) and works nicely [with Windows
+  Subsystem for Linux](https://docs.microsoft.com/en-us/windows/wsl/about).
+  Example:
+
+```vim
+let g:split_term_default_shell = "bash"
+```
+
+`g:split_term_vertical` - force the `:Term` command to always use a vertical
+  buffer (using `:vnew`)
+
+`g:disable_key_mappings` - disable key mappings of the plugin
+
+
 
 ## Mappings