actions: switch mode from r to when sending to quickfix list (#…

…1739)

Changes functions that use `setqflist` in `r` mode to instead use
` ` mode. This makes the Telescope quickfix list action send results
to a new list in the quickfix stack instead of overwriting the
entries in the current list. Doing so enables `:chistory`, `:colder`
and `:cnewer` functions to review results of previous Telescope
queries.

The location list uses a similar API and is updated in this PR also
(ie this also enables `:lhistory`, `:lolder` and `:lnewer`).

lua/telescope/actions/init.lua

@@ -667,7 +667,7 @@ end
 
 --- Sends the selected entries to the quickfix list, replacing the previous entries.
 actions.send_selected_to_qflist = function(prompt_bufnr)
-  send_selected_to_qf(prompt_bufnr, "r")
+  send_selected_to_qf(prompt_bufnr, " ")
 end
 
 --- Adds the selected entries to the quickfix list, keeping the previous entries.
@@ -677,7 +677,7 @@ end
 
 --- Sends all entries to the quickfix list, replacing the previous entries.
 actions.send_to_qflist = function(prompt_bufnr)
-  send_all_to_qf(prompt_bufnr, "r")
+  send_all_to_qf(prompt_bufnr, " ")
 end
 
 --- Adds all entries to the quickfix list, keeping the previous entries.
@@ -687,7 +687,7 @@ end
 
 --- Sends the selected entries to the location list, replacing the previous entries.
 actions.send_selected_to_loclist = function(prompt_bufnr)
-  send_selected_to_qf(prompt_bufnr, "r", "loclist")
+  send_selected_to_qf(prompt_bufnr, " ", "loclist")
 end
 
 --- Adds the selected entries to the location list, keeping the previous entries.
@@ -697,7 +697,7 @@ end
 
 --- Sends all entries to the location list, replacing the previous entries.
 actions.send_to_loclist = function(prompt_bufnr)
-  send_all_to_qf(prompt_bufnr, "r", "loclist")
+  send_all_to_qf(prompt_bufnr, " ", "loclist")
 end
 
 --- Adds all entries to the location list, keeping the previous entries.
@@ -717,7 +717,7 @@ end
 --- Sends the selected entries to the quickfix list, replacing the previous entries.
 --- If no entry was selected, sends all entries.
 actions.smart_send_to_qflist = function(prompt_bufnr)
-  smart_send(prompt_bufnr, "r")
+  smart_send(prompt_bufnr, " ")
 end
 
 --- Adds the selected entries to the quickfix list, keeping the previous entries.
@@ -729,7 +729,7 @@ end
 --- Sends the selected entries to the location list, replacing the previous entries.
 --- If no entry was selected, sends all entries.
 actions.smart_send_to_loclist = function(prompt_bufnr)
-  smart_send(prompt_bufnr, "r", "loclist")
+  smart_send(prompt_bufnr, " ", "loclist")
 end
 
 --- Adds the selected entries to the location list, keeping the previous entries.