From 16e3efbcb100981e9c6c0adbf6287d4a59d022f3 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Sun, 7 Jun 2020 10:13:35 +0900
Subject: [PATCH] Disable preview window if bash is not found

Fix #1039
---
 autoload/fzf/vim.vim | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/autoload/fzf/vim.vim b/autoload/fzf/vim.vim
index fb37c8e..039b085 100644
--- a/autoload/fzf/vim.vim
+++ b/autoload/fzf/vim.vim
@@ -44,6 +44,7 @@ if s:is_win
 endif
 
 let s:wide = 120
+let s:warned = 0
 
 function! s:extend_opts(dict, eopts, prepend)
   if empty(a:eopts)
@@ -76,9 +77,6 @@ endfunction
 " [[options to wrap], [preview window expression], [toggle-preview keys...]]
 function! fzf#vim#with_preview(...)
   let bash_path = exepath('bash')
-  if empty(bash_path)
-    throw 'bash is not in PATH'
-  endif
   let is_wsl_bash = bash_path =~? 'Windows[/\\]system32[/\\]bash.exe$'
   " Default options
   let options = {}
@@ -92,6 +90,14 @@ function! fzf#vim#with_preview(...)
     call remove(args, 0)
   endif
 
+  if empty(bash_path)
+    if !s:warned
+      call s:warn('Preview window not supported (bash not found in PATH)')
+      let s:warned = 1
+    endif
+    return options
+  endif
+
   " Placeholder expression (TODO/TBD: undocumented)
   let placeholder = get(options, 'placeholder', '{}')