Improve foldsearch plugin (#3768)

autoload/SpaceVim/plugins/foldsearch.vim

@@ -7,11 +7,24 @@
 "=============================================================================
 
 let s:JOB = SpaceVim#api#import('job')
+let s:SYS = SpaceVim#api#import('system')
+let s:LOGGER =SpaceVim#logger#derive('fsearch')
+
 let s:matched_lines = []
 let s:foldsearch_highlight_id = -1
 
+let [
+      \ s:grep_default_exe,
+      \ s:grep_default_opt,
+      \ s:grep_default_ropt,
+      \ s:grep_default_expr_opt,
+      \ s:grep_default_fix_string_opt,
+      \ s:grep_default_ignore_case,
+      \ s:grep_default_smart_case
+      \ ] = SpaceVim#mapping#search#default_tool()
 
-function! SpaceVim#plugins#foldsearch#end()
+
+function! SpaceVim#plugins#foldsearch#end() abort
   normal! zE
   try
     call matchdelete(s:foldsearch_highlight_id)
@@ -19,8 +32,12 @@ function! SpaceVim#plugins#foldsearch#end()
   endtry
 endfunction
 
-function! SpaceVim#plugins#foldsearch#word(word)
+function! SpaceVim#plugins#foldsearch#word(word) abort
-  let argv = ['rg', '--line-number', '--fixed-strings', a:word]
+  let argv = [s:grep_default_exe] + 
+        \ s:grep_default_opt +
+        \ s:grep_default_fix_string_opt +
+        \ [a:word]
+  call s:LOGGER.info('cmd: ' . string(argv))
   try
     call matchdelete(s:foldsearch_highlight_id)
   catch
@@ -29,8 +46,12 @@ function! SpaceVim#plugins#foldsearch#word(word)
   call s:foldsearch(argv)
 endfunction
 
-function! SpaceVim#plugins#foldsearch#expr(expr)
+function! SpaceVim#plugins#foldsearch#expr(expr) abort
-  let argv = ['rg', '--line-number', a:expr]
+  let argv = [s:grep_default_exe] + 
+        \ s:grep_default_opt +
+        \ s:grep_default_expr_opt +
+        \ [a:expr]
+  call s:LOGGER.info('cmd: ' . string(argv))
   try
     call matchdelete(s:foldsearch_highlight_id)
   catch
@@ -52,11 +73,12 @@ endfunction
 
 function! s:std_out(id, data, event) abort
   for line in filter(a:data, '!empty(v:val)')
-    call add(s:matched_lines, str2nr(matchstr(line, '^\d\+')))
+    call add(s:matched_lines, str2nr(matchstr(line, ':\d\+:')[1:-2]))
   endfor
 endfunction
 
 function! s:exit(id, data, event) abort
+  call s:LOGGER.info('foldsearch job exit with: '. a:data)
   let preview = 0
   for nr in s:matched_lines
     if nr - preview >= 3 " first matched line is 3

docs/cn/layers/foldsearch.md

@@ -27,7 +27,7 @@ lang: zh
   name = "foldsearch"
 ```
 
-该模块依赖于命令：[ripgrep](https://github.com/BurntSushi/ripgrep)。
+使用这一模块，需要安装一个文本搜索命令，可以选择：`ag`、`rg`、`ack`、`pt` 或者 `grep`。
 
 ## 快捷键
 

docs/layers/foldsearch.md

@@ -28,7 +28,8 @@ To use this layer, add it to your configuration file.
     name = "foldsearch"
 ```
 
-This layer requires [ripgrep](https://github.com/BurntSushi/ripgrep).
+This layer requires at least one search tools: `ag`, `rg`, `ack`, `pt` and `grep`,
+Choose your favorite one.
 
 ## Options