Merge pull request #7744 from jamessan/vim-8.0.0517

[RFC] vim-patch:8.0.0517,8.0.0536,8.0.0584

runtime/doc/eval.txt

@@ -6855,16 +6855,19 @@ setqflist({list} [, {action}[, {what}]])		*setqflist()*
 		Note that the list is not exactly the same as what
 		|getqflist()| returns.
 
-							*E927*
-		If {action} is set to 'a', then the items from {list} are
-		added to the existing quickfix list. If there is no existing
-		list, then a new list is created.
+		{action} values:				*E927*
+		'a'	The items from {list} are added to the existing
+			quickfix list. If there is no existing list, then a
+			new list is created.
 		
-		If {action} is set to 'r', then the items from the current
-		quickfix list are replaced with the items from {list}.  This
-		can also be used to clear the list: >
-			:call setqflist([], 'r')
+		'r'	The items from the current quickfix list are replaced
+			with the items from {list}.  This can also be used to
+			clear the list: >
+				:call setqflist([], 'r')
 <	
+		'f'	All the quickfix lists in the quickfix stack are
+			freed.
+
 		If {action} is not present or is set to ' ', then a new list
 		is created.
 

src/nvim/eval.c

@@ -14594,7 +14594,8 @@ static void set_qf_ll_list(win_T *wp, typval_T *args, typval_T *rettv)
     return;
   }
   const char *const act = tv_get_string_chk(action_arg);
-  if ((*act == 'a' || *act == 'r' || *act == ' ') && act[1] == NUL) {
+  if ((*act == 'a' || *act == 'r' || *act == ' ' || *act == 'f')
+      && act[1] == NUL) {
     action = *act;
   } else {
     EMSG2(_(e_invact), act);

src/nvim/quickfix.c

@@ -4267,6 +4267,64 @@ static int qf_set_properties(qf_info_T *qi, dict_T *what, int action)
   return retval;
 }
 
+// Find the non-location list window with the specified location list.
+static win_T * find_win_with_ll(qf_info_T *qi)
+{
+  FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
+    if ((wp->w_llist == qi) && !bt_quickfix(wp->w_buffer)) {
+      return wp;
+    }
+  }
+
+  return NULL;
+}
+
+// Free the entire quickfix/location list stack.
+// If the quickfix/location list window is open, then clear it.
+static void qf_free_stack(win_T *wp, qf_info_T *qi)
+{
+  win_T *qfwin = qf_find_win(qi);
+
+  if (qfwin != NULL) {
+    // If the quickfix/location list window is open, then clear it
+    if (qi->qf_curlist < qi->qf_listcount) {
+      qf_free(qi, qi->qf_curlist);
+    }
+    qf_update_buffer(qi, NULL);
+  }
+
+  win_T *llwin = NULL;
+  win_T *orig_wp = wp;
+  if (wp != NULL && IS_LL_WINDOW(wp)) {
+    // If in the location list window, then use the non-location list
+    // window with this location list (if present)
+    llwin = find_win_with_ll(qi);
+    if (llwin != NULL) {
+      wp = llwin;
+    }
+  }
+
+  qf_free_all(wp);
+  if (wp == NULL) {
+    // quickfix list
+    qi->qf_curlist = 0;
+    qi->qf_listcount = 0;
+  } else if (IS_LL_WINDOW(orig_wp)) {
+    // If the location list window is open, then create a new empty location
+    // list
+    qf_info_T *new_ll = ll_new_list();
+
+    // first free the list reference in the location list window
+    ll_free_all(&orig_wp->w_llist_ref);
+
+    orig_wp->w_llist_ref = new_ll;
+    if (llwin != NULL) {
+      llwin->w_llist = new_ll;
+      new_ll->qf_refcount++;
+    }
+  }
+}
+
 // Populate the quickfix list with the items supplied in the list
 // of dictionaries. "title" will be copied to w:quickfix_title
 // "action" is 'a' for add, 'r' for replace.  Otherwise create a new list.
@@ -4280,7 +4338,10 @@ int set_errorlist(win_T *wp, list_T *list, int action, char_u *title,
     qi = ll_get_or_alloc_list(wp);
   }
 
-  if (what != NULL) {
+  if (action == 'f') {
+    // Free the entire quickfix or location list stack
+    qf_free_stack(wp, qi);
+  } else if (what != NULL) {
     retval = qf_set_properties(qi, what, action);
   } else {
     retval = qf_add_entries(qi, list, title, action);

src/nvim/testdir/test_quickfix.vim

@@ -38,6 +38,7 @@ func s:setup_commands(cchar)
     command! -nargs=* Xhelpgrep helpgrep <args>
     let g:Xgetlist = function('getqflist')
     let g:Xsetlist = function('setqflist')
+    call setqflist([], 'f')
   else
     command! -nargs=* -bang Xlist <mods>llist<bang> <args>
     command! -nargs=* Xgetexpr <mods>lgetexpr <args>
@@ -69,6 +70,7 @@ func s:setup_commands(cchar)
     command! -nargs=* Xhelpgrep lhelpgrep <args>
     let g:Xgetlist = function('getloclist', [0])
     let g:Xsetlist = function('setloclist', [0])
+    call setloclist(0, [], 'f')
   endif
 endfunc
 
@@ -76,6 +78,9 @@ endfunc
 func XlistTests(cchar)
   call s:setup_commands(a:cchar)
 
+  if a:cchar == 'l'
+      call assert_fails('llist', 'E776:')
+  endif
   " With an empty list, command should return error
   Xgetexpr []
   silent! Xlist
@@ -146,6 +151,9 @@ endfunc
 func XageTests(cchar)
   call s:setup_commands(a:cchar)
 
+  let list = [{'bufnr': 1, 'lnum': 1}]
+  call g:Xsetlist(list)
+
   " Jumping to a non existent list should return error
   silent! Xolder 99
   call assert_true(v:errmsg ==# 'E380: At bottom of quickfix stack')
@@ -179,11 +187,7 @@ func XageTests(cchar)
 endfunc
 
 func Test_cage()
-  let list = [{'bufnr': 1, 'lnum': 1}]
-  call setqflist(list)
   call XageTests('c')
-
-  call setloclist(0, list)
   call XageTests('l')
 endfunc
 
@@ -192,6 +196,11 @@ endfunc
 func XwindowTests(cchar)
   call s:setup_commands(a:cchar)
 
+  " Opening the location list window without any errors should fail
+  if a:cchar == 'l'
+      call assert_fails('lopen', 'E776:')
+  endif
+
   " Create a list with no valid entries
   Xgetexpr ['non-error 1', 'non-error 2', 'non-error 3']
 
@@ -232,6 +241,19 @@ func XwindowTests(cchar)
   " Calling cwindow should close the quickfix window with no valid errors
   Xwindow
   call assert_true(winnr('$') == 1)
+
+  if a:cchar == 'c'
+      " Opening the quickfix window in multiple tab pages should reuse the
+      " quickfix buffer
+      Xgetexpr ['Xtestfile1:1:3:Line1', 'Xtestfile2:2:2:Line2',
+		  \ 'Xtestfile3:3:1:Line3']
+      Xopen
+      let qfbufnum = bufnr('%')
+      tabnew
+      Xopen
+      call assert_equal(qfbufnum, bufnr('%'))
+      new | only | tabonly
+  endif
 endfunc
 
 func Test_cwindow()
@@ -360,6 +382,13 @@ endfunc
 func Xtest_browse(cchar)
   call s:setup_commands(a:cchar)
 
+  " Jumping to first or next location list entry without any error should
+  " result in failure
+  if a:cchar == 'l'
+      call assert_fails('lfirst', 'E776:')
+      call assert_fails('lnext', 'E776:')
+  endif
+
   call s:create_test_file('Xqftestfile1')
   call s:create_test_file('Xqftestfile2')
 
@@ -1532,6 +1561,11 @@ endfunc
 func XbottomTests(cchar)
   call s:setup_commands(a:cchar)
 
+  " Calling lbottom without any errors should fail
+  if a:cchar == 'l'
+      call assert_fails('lbottom', 'E776:')
+  endif
+
   call g:Xsetlist([{'filename': 'foo', 'lnum': 42}]) 
   Xopen
   let wid = win_getid()
@@ -1553,10 +1587,9 @@ endfunc
 func HistoryTest(cchar)
   call s:setup_commands(a:cchar)
 
-  call assert_fails(a:cchar . 'older 99', 'E380:')
   " clear all lists after the first one, then replace the first one.
   call g:Xsetlist([])
-  Xolder
+  call assert_fails('Xolder 99', 'E380:')
   let entry = {'filename': 'foo', 'lnum': 42}
   call g:Xsetlist([entry], 'r')
   call g:Xsetlist([entry, entry])
@@ -1599,6 +1632,7 @@ func Xproperty_tests(cchar)
     call assert_fails('call g:Xsetlist([], "a", [])', 'E715:')
 
     " Set and get the title
+    call g:Xsetlist([])
     Xopen
     wincmd p
     call g:Xsetlist([{'filename':'foo', 'lnum':27}])
@@ -1860,3 +1894,66 @@ func Test_vimgrep()
   call XvimgrepTests('c')
   call XvimgrepTests('l')
 endfunc
+
+func XfreeTests(cchar)
+  call s:setup_commands(a:cchar)
+
+  enew | only
+
+  " Deleting the quickfix stack should work even When the current list is
+  " somewhere in the middle of the stack
+  Xexpr ['Xfile1:10:10:Line 10', 'Xfile1:15:15:Line 15']
+  Xexpr ['Xfile2:20:20:Line 20', 'Xfile2:25:25:Line 25']
+  Xexpr ['Xfile3:30:30:Line 30', 'Xfile3:35:35:Line 35']
+  Xolder
+  call g:Xsetlist([], 'f')
+  call assert_equal(0, len(g:Xgetlist()))
+
+  " After deleting the stack, adding a new list should create a stack with a
+  " single list.
+  Xexpr ['Xfile1:10:10:Line 10', 'Xfile1:15:15:Line 15']
+  call assert_equal(1, g:Xgetlist({'all':1}).nr)
+
+  " Deleting the stack from a quickfix window should update/clear the
+  " quickfix/location list window.
+  Xexpr ['Xfile1:10:10:Line 10', 'Xfile1:15:15:Line 15']
+  Xexpr ['Xfile2:20:20:Line 20', 'Xfile2:25:25:Line 25']
+  Xexpr ['Xfile3:30:30:Line 30', 'Xfile3:35:35:Line 35']
+  Xolder
+  Xwindow
+  call g:Xsetlist([], 'f')
+  call assert_equal(2, winnr('$'))
+  call assert_equal(1, line('$'))
+  Xclose
+
+  " Deleting the stack from a non-quickfix window should update/clear the
+  " quickfix/location list window.
+  Xexpr ['Xfile1:10:10:Line 10', 'Xfile1:15:15:Line 15']
+  Xexpr ['Xfile2:20:20:Line 20', 'Xfile2:25:25:Line 25']
+  Xexpr ['Xfile3:30:30:Line 30', 'Xfile3:35:35:Line 35']
+  Xolder
+  Xwindow
+  wincmd p
+  call g:Xsetlist([], 'f')
+  call assert_equal(0, len(g:Xgetlist()))
+  wincmd p
+  call assert_equal(2, winnr('$'))
+  call assert_equal(1, line('$'))
+
+  " After deleting the location list stack, if the location list window is
+  " opened, then a new location list should be created. So opening the
+  " location list window again should not create a new window.
+  if a:cchar == 'l'
+      lexpr ['Xfile1:10:10:Line 10', 'Xfile1:15:15:Line 15']
+      wincmd p
+      lopen
+      call assert_equal(2, winnr('$'))
+  endif
+  Xclose
+endfunc
+
+" Tests for the quickifx free functionality
+func Test_qf_free()
+  call XfreeTests('c')
+  call XfreeTests('l')
+endfunc