Use temp file to reduce risk of session file corruption

Resolves: #71
tpope · Mar 25, 2022 · d2818a6 · d2818a6 · eph-raim · Apr 3, 2022
1 parent a56dcd6
commit d2818a6
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/plugin/obsession.vim b/plugin/obsession.vim
@@ -70,17 +70,19 @@ function! s:persist() abort
   if exists('g:this_obsession')
     try
       set sessionoptions-=blank sessionoptions-=options sessionoptions+=tabpages
+      let tmp = g:this_obsession . '.obsession.' . getpid()
       exe s:doautocmd_user('ObsessionPre')
-      execute 'mksession! '.fnameescape(g:this_obsession)
-      let body = readfile(g:this_obsession)
+      execute 'mksession!' fnameescape(tmp)
+      let body = readfile(tmp)
       call insert(body, 'let g:this_session = v:this_session', -3)
       call insert(body, 'let g:this_obsession = v:this_session', -3)
       if type(get(g:, 'obsession_append')) == type([])
         for line in g:obsession_append
           call insert(body, line, -3)
         endfor
       endif
-      call writefile(body, g:this_obsession)
+      call writefile(body, tmp)
+      call rename(tmp, g:this_obsession)
       let g:this_session = g:this_obsession
       exe s:doautocmd_user('Obsession')
     catch /^Vim(mksession):E11:/