vim-patch:9.1.0507: hard to detect cursor movement in the command line

Problem:  hard to detect cursor movement in the command line
Solution: Add the CursorMovedC autocommand
          (Shougo Matsushita)

closes: vim/vim#15040

https://github.com/vim/vim/commit/d09521476f41dd8dbddb25b7acd0b299f9bf94d3

Co-authored-by: Shougo Matsushita <Shougo.Matsu@gmail.com>

1 files changed, 20 insertions, 6 deletions

diff --git a/src/nvim/ex_getln.c b/src/nvim/ex_getln.c
index 588f0aea13..8e0378dd68 100644
--- a/src/nvim/ex_getln.c
+++ b/src/nvim/ex_getln.c
@@ -133,7 +133,8 @@ typedef struct {
   int did_wild_list;                    // did wild_list() recently
   int wim_index;                        // index in wim_flags[]
   int save_msg_scroll;
-  int save_State;                 // remember State when called
+  int save_State;                       // remember State when called
+  int save_cmdspos;
   char *save_p_icm;
   int some_key_typed;                   // one of the keys was typed
   // mouse drag and release events are ignored, unless they are
@@ -223,6 +224,12 @@ static int cmdpreview_ns = 0;
 static const char e_active_window_or_buffer_changed_or_deleted[]
   = N_("E199: Active window or buffer changed or deleted");
 
+static void trigger_cmd_autocmd(int typechar, event_T evt)
+{
+  char typestr[2] = { (char)typechar, NUL };
+  apply_autocmds(evt, typestr, typestr, false, curbuf);
+}
+
 static void save_viewstate(win_T *wp, viewstate_T *vs)
   FUNC_ATTR_NONNULL_ALL
 {
@@ -684,6 +691,7 @@ static uint8_t *command_line_enter(int firstc, int count, int indent, bool clear
     .indent = indent,
     .save_msg_scroll = msg_scroll,
     .save_State = State,
+    .save_cmdspos = ccline.cmdspos,
     .ignore_drag_release = true,
   };
   CommandLineState *s = &state;
@@ -2175,6 +2183,11 @@ static int command_line_handle_key(CommandLineState *s)
 
 static int command_line_not_changed(CommandLineState *s)
 {
+  // Trigger CursorMovedC autocommands.
+  if (ccline.cmdspos != s->save_cmdspos) {
+    trigger_cmd_autocmd(get_cmdline_type(), EVENT_CURSORMOVEDC);
+  }
+
   // Incremental searches for "/" and "?":
   // Enter command_line_not_changed() when a character has been read but the
   // command line did not change. Then we only search and redraw if something
@@ -4177,6 +4190,10 @@ static int set_cmdline_pos(int pos)
   } else {
     new_cmdpos = pos;
   }
+
+  // Trigger CursorMovedC autocommands.
+  trigger_cmd_autocmd(get_cmdline_type(), EVENT_CURSORMOVEDC);
+
   return 0;
 }
 
@@ -4303,7 +4320,6 @@ static int open_cmdwin(void)
   win_T *old_curwin = curwin;
   int i;
   garray_T winsizes;
-  char typestr[2];
   int save_restart_edit = restart_edit;
   int save_State = State;
   bool save_exmode = exmode_active;
@@ -4446,9 +4462,7 @@ static int open_cmdwin(void)
   cmdwin_result = 0;
 
   // Trigger CmdwinEnter autocommands.
-  typestr[0] = (char)cmdwin_type;
-  typestr[1] = NUL;
-  apply_autocmds(EVENT_CMDWINENTER, typestr, typestr, false, curbuf);
+  trigger_cmd_autocmd(cmdwin_type, EVENT_CMDWINENTER);
   if (restart_edit != 0) {  // autocmd with ":startinsert"
     stuffcharReadbuff(K_NOP);
   }
@@ -4466,7 +4480,7 @@ static int open_cmdwin(void)
   const bool save_KeyTyped = KeyTyped;
 
   // Trigger CmdwinLeave autocommands.
-  apply_autocmds(EVENT_CMDWINLEAVE, typestr, typestr, false, curbuf);
+  trigger_cmd_autocmd(cmdwin_type, EVENT_CMDWINLEAVE);
 
   // Restore KeyTyped in case it is modified by autocommands
   KeyTyped = save_KeyTyped;