ctrlp cache uses getcwd() as basename, with autochdir this causes reindexing for files in the same project with different directory

[char101]

Hi,

ctrlp#utils#cachefile by default uses getcwd() as the cache filename. And it is called in https://github.com/ctrlpvim/ctrlp.vim/blob/master/autoload/ctrlp.vim#L381 without any parameter.

When autochdir is set, opening ctrlp with files in the same project root but that belongs to different directory causes reindexing to occur.

Can't the cache file uses to project root as base filename instead?

[char101]

What works for me

diff --git a/autoload/ctrlp.vim b/autoload/ctrlp.vim
index d4445c8..0b074d4 100644
--- a/autoload/ctrlp.vim
+++ b/autoload/ctrlp.vim
@@ -379,7 +379,7 @@ fu! s:Reset(args)
 endf
 " * Files {{{1
 fu! ctrlp#files()
-       let cafile = ctrlp#utils#cachefile()
+       let cafile = ctrlp#utils#cachefile(s:dyncwd, 1)
        if g:ctrlp_newcache || !filereadable(cafile) || s:nocache(cafile)
                let [lscmd, s:initcwd, g:ctrlp_allfiles] = [s:lsCmd(), s:dyncwd, []]
                " Get the list of files
@@ -2637,7 +2637,7 @@ endf
 " Cache {{{2
 fu! s:writecache(cafile)
        if ( g:ctrlp_newcache || !filereadable(a:cafile) ) && !s:nocache()
-               cal ctrlp#utils#writecache(g:ctrlp_allfiles)
+               cal ctrlp#utils#writecache(g:ctrlp_allfiles, ctrlp#utils#cachedir(), a:cafile)
                let g:ctrlp_newcache = 0
        en
 endf
@@ -2670,7 +2670,7 @@ fu! s:insertcache(str)
                endfo
        en
        cal insert(data, str, pos)
-       cal s:writecache(ctrlp#utils#cachefile())
+       cal s:writecache(ctrlp#utils#cachefile(s:dyncwd, 1))
 endf
 " Extensions {{{2
 fu! s:mtype()