Fix --info inline-right:PREFIX not clearing previous output

Close #4953

CHANGELOG.md

@@ -1,6 +1,10 @@
 CHANGELOG
 =========
 
+0.75.1
+------
+- Fixed `--info inline-right:PREFIX` leaving part of the previous output when the info gets shorter (#4953)
+
 0.75.0
 ------
 - Added `{change,transform,bg-transform}-info-command` actions (#4951) (@casperdcl)

src/terminal.go

@@ -3664,7 +3664,10 @@ func (t *Terminal) printInfoImpl() {
 				pos++
 			}
 		} else {
-			pos = max(pos, t.window.Width()-outputLen-util.StringWidth(t.infoPrefix)-1)
+			move(line, pos, false)
+			newPos := max(pos, t.window.Width()-outputLen-util.StringWidth(t.infoPrefix)-1)
+			t.window.Print(strings.Repeat(" ", newPos-pos))
+			pos = newPos
 			printInfoPrefix()
 		}
 	}

test/test_core.rb

@@ -1792,6 +1792,13 @@ class TestCore < TestInteractive
     tmux.until { assert_match(%r{     0/100000}, it[-1]) }
   end
 
+  def test_info_inline_right_prefix_clearance
+    tmux.send_keys "seq 100000 | #{FZF} --info 'inline-right:xx '", :Enter
+    tmux.until { assert_match(%r{xx 100000/100000}, it[-1]) }
+    tmux.send_keys 'x'
+    tmux.until { assert_match(%r{     xx 0/100000}, it[-1]) }
+  end
+
   def test_info_command
     tmux.send_keys(%(seq 10000 | #{FZF} --separator x --info-command 'echo -e "--\\x1b[33m$FZF_POS\\x1b[m/$FZF_INFO--"'), :Enter)
     tmux.until { assert_match(%r{^  --1/10000/10000-- xx}, it[-2]) }