vim-patch:8.1.0720: cannot easily change the current quickfx list index

Problem:    Cannot easily change the current quickfx list index.
Solution:   Add the "idx" argument to setqflist(). (Yegappan Lakshmanan,
            closes vim/vim#3701)
https://github.com/vim/vim/commit/5b69c22fd2bf0c0d32aab90ee4c7ef74259d2c4c

1 files changed, 57 insertions, 0 deletions

diff --git a/src/nvim/testdir/test_quickfix.vim b/src/nvim/testdir/test_quickfix.vim
index 4e04ea161f..6f579920bf 100644
--- a/src/nvim/testdir/test_quickfix.vim
+++ b/src/nvim/testdir/test_quickfix.vim
@@ -1916,6 +1916,13 @@ func HistoryTest(cchar)
   call g:Xsetlist([], 'f')
   let l = split(execute(a:cchar . 'hist'), "\n")
   call assert_equal('No entries', l[0])
+
+  " An empty list should still show the stack history
+  call g:Xsetlist([])
+  let res = split(execute(a:cchar . 'hist'), "\n")
+  call assert_equal('> error list 1 of 1; 0 ' . common, res[0])
+
+  call g:Xsetlist([], 'f')
 endfunc
 
 func Test_history()
@@ -2173,6 +2180,56 @@ func Test_qf_property()
     call Xproperty_tests('l')
 endfunc
 
+" Test for setting the current index in the location/quickfix list
+func Xtest_setqfidx(cchar)
+  call s:setup_commands(a:cchar)
+
+  Xgetexpr "F1:10:1:Line1\nF2:20:2:Line2\nF3:30:3:Line3"
+  Xgetexpr "F4:10:1:Line1\nF5:20:2:Line2\nF6:30:3:Line3"
+  Xgetexpr "F7:10:1:Line1\nF8:20:2:Line2\nF9:30:3:Line3"
+
+  call g:Xsetlist([], 'a', {'nr' : 3, 'idx' : 2})
+  call g:Xsetlist([], 'a', {'nr' : 2, 'idx' : 2})
+  call g:Xsetlist([], 'a', {'nr' : 1, 'idx' : 3})
+  Xolder 2
+  Xopen
+  call assert_equal(3, line('.'))
+  Xnewer
+  call assert_equal(2, line('.'))
+  Xnewer
+  call assert_equal(2, line('.'))
+  " Update the current index with the quickfix window open
+  wincmd w
+  call g:Xsetlist([], 'a', {'nr' : 3, 'idx' : 3})
+  Xopen
+  call assert_equal(3, line('.'))
+  Xclose
+
+  " Set the current index to the last entry
+  call g:Xsetlist([], 'a', {'nr' : 1, 'idx' : '$'})
+  call assert_equal(3, g:Xgetlist({'nr' : 1, 'idx' : 0}).idx)
+  " A large value should set the index to the last index
+  call g:Xsetlist([], 'a', {'nr' : 1, 'idx' : 1})
+  call g:Xsetlist([], 'a', {'nr' : 1, 'idx' : 999})
+  call assert_equal(3, g:Xgetlist({'nr' : 1, 'idx' : 0}).idx)
+  " Invalid index values
+  call g:Xsetlist([], 'a', {'nr' : 1, 'idx' : -1})
+  call assert_equal(3, g:Xgetlist({'nr' : 1, 'idx' : 0}).idx)
+  call g:Xsetlist([], 'a', {'nr' : 1, 'idx' : 0})
+  call assert_equal(3, g:Xgetlist({'nr' : 1, 'idx' : 0}).idx)
+  call g:Xsetlist([], 'a', {'nr' : 1, 'idx' : 'xx'})
+  call assert_equal(3, g:Xgetlist({'nr' : 1, 'idx' : 0}).idx)
+  call assert_fails("call g:Xsetlist([], 'a', {'nr':1, 'idx':[]})", 'E745:')
+
+  call g:Xsetlist([], 'f')
+  new | only
+endfunc
+
+func Test_setqfidx()
+  call Xtest_setqfidx('c')
+  call Xtest_setqfidx('l')
+endfunc
+
 " Tests for the QuickFixCmdPre/QuickFixCmdPost autocommands
 func QfAutoCmdHandler(loc, cmd)
   call add(g:acmds, a:loc . a:cmd)