feat(defaults): set nojoinspaces

src/nvim/options.lua

@@ -1288,7 +1288,7 @@ return {
       short_desc=N_("two spaces after a period with a join command"),
       type='bool', scope={'global'},
       varname='p_js',
-      defaults={if_true=true}
+      defaults={if_true=false}
     },
     {
       full_name='jumpoptions', abbreviation='jop',

src/nvim/testdir/setup.vim

@@ -12,6 +12,7 @@ set directory^=.
 set fillchars=vert:\|,fold:-
 set laststatus=1
 set listchars=eol:$
+set joinspaces
 set nohidden smarttab noautoindent noautoread complete-=i noruler noshowcmd
 set nrformats+=octal
 set shortmess-=F

src/nvim/testdir/test_join.vim

@@ -35,6 +35,7 @@ endfunc
 
 " Tests for setting the '[,'] marks when joining lines.
 func Test_join_marks()
+  set joinspaces
   enew
   call append(0, [
 	      \ "\t\tO sodales, ludite, vos qui",
@@ -53,6 +54,7 @@ func Test_join_marks()
   call assert_equal([0, 4, 11, 0], getpos("'["))
   call assert_equal([0, 4, 67, 0], getpos("']"))
   enew!
+  set nojoinspaces
 endfunc
 
 " Test for joining lines and marks in them