Add clear-query and clear-selection

Close #1787
Related #1364

CHANGELOG.md

@@ -7,6 +7,7 @@ CHANGELOG
   ```sh
   : | fzf --bind 'change:reload:seq {q}' --phony
   ```
+- Added `clear-query` and `clear-selection` actions for `--bind`
 - It is now possible to split a composite bind action over multiple `--bind`
   expressions by prefixing the later ones with `+`.
   ```sh

man/man1/fzf.1

@@ -632,11 +632,13 @@ A key or an event can be bound to one or more of the following actions.
     \fBbackward-kill-word\fR    \fIalt-bs\fR
     \fBbackward-word\fR         \fIalt-b   shift-left\fR
     \fBbeginning-of-line\fR     \fIctrl-a  home\fR
-    \fBcancel\fR                (clears query string if not empty, aborts fzf otherwise)
+    \fBcancel\fR                (clear query string if not empty, abort fzf otherwise)
     \fBclear-screen\fR          \fIctrl-l\fR
+    \fBclear-selection\fR       (clear multi-selection)
+    \fBclear-query\fR           (clear query string)
     \fBdelete-char\fR           \fIdel\fR
     \fBdelete-char/eof\fR       \fIctrl-d\fR
-    \fBdeselect-all\fR
+    \fBdeselect-all\fR          (deselect all matches)
     \fBdown\fR                  \fIctrl-j  ctrl-n  down\fR
     \fBend-of-line\fR           \fIctrl-e  end\fR
     \fBexecute(...)\fR          (see below for the details)
@@ -662,9 +664,9 @@ A key or an event can be bound to one or more of the following actions.
     \fBprint-query\fR           (print query and exit)
     \fBreload(...)\fR           (see below for the details)
     \fBreplace-query\fR         (replace query string with the current selection)
-    \fBselect-all\fR
+    \fBselect-all\fR            (select all matches)
     \fBtoggle\fR                (\fIright-click\fR)
-    \fBtoggle-all\fR
+    \fBtoggle-all\fR            (toggle all matches)
     \fBtoggle+down\fR           \fIctrl-i  (tab)\fR
     \fBtoggle-in\fR             (\fB--layout=reverse*\fR ? \fBtoggle+up\fR : \fBtoggle+down\fR)
     \fBtoggle-out\fR            (\fB--layout=reverse*\fR ? \fBtoggle+down\fR : \fBtoggle+up\fR)

src/options.go

@@ -738,6 +738,10 @@ func parseKeymap(keymap map[int][]action, str string) {
 				appendAction(actEndOfLine)
 			case "cancel":
 				appendAction(actCancel)
+			case "clear-query":
+				appendAction(actClearQuery)
+			case "clear-selection":
+				appendAction(actClearSelection)
 			case "forward-char":
 				appendAction(actForwardChar)
 			case "forward-word":

src/terminal.go

@@ -185,6 +185,8 @@ const (
 	actBackwardWord
 	actCancel
 	actClearScreen
+	actClearQuery
+	actClearSelection
 	actDeleteChar
 	actDeleteCharEOF
 	actEndOfLine
@@ -1905,6 +1907,15 @@ func (t *Terminal) Loop() {
 				}
 			case actClearScreen:
 				req(reqRedraw)
+			case actClearQuery:
+				t.input = []rune{}
+				t.cx = 0
+			case actClearSelection:
+				if t.multi > 0 {
+					t.selected = make(map[int32]selectedItem)
+					t.version++
+					req(reqList, reqInfo)
+				}
 			case actTop:
 				t.vset(0)
 				req(reqList)

test/test_go.rb

@@ -1654,6 +1654,29 @@ class TestGoFZF < TestBase
     tmux.send_keys :Space
     tmux.until { |lines| lines.none? { |line| line.include?('9') } }
   end
+
+  def test_clear_query
+    tmux.send_keys %(: | #{FZF} --query foo --bind space:clear-query), :Enter
+    tmux.until { |lines| lines.item_count.zero? }
+    tmux.until { |lines| lines.last.include?('> foo') }
+    tmux.send_keys 'C-a', 'bar'
+    tmux.until { |lines| lines.last.include?('> barfoo') }
+    tmux.send_keys :Space
+    tmux.until { |lines| lines.last == '>' }
+  end
+
+  def test_clear_selection
+    tmux.send_keys %(seq 100 | #{FZF} --multi --bind space:clear-selection), :Enter
+    tmux.until { |lines| lines.match_count == 100 }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines[-2].include?('(1)') }
+    tmux.send_keys 'foo'
+    tmux.until { |lines| lines.match_count.zero? }
+    tmux.until { |lines| lines[-2].include?('(1)') }
+    tmux.send_keys :Space
+    tmux.until { |lines| lines.match_count.zero? }
+    tmux.until { |lines| !lines[-2].include?('(1)') }
+  end
 end
 
 module TestShell