1 files changed, 27 insertions, 5 deletions

diff --git a/src/nvim/api/private/helpers.c b/src/nvim/api/private/helpers.c
index e35c58bf1b..73b5489d5c 100644
--- a/src/nvim/api/private/helpers.c
+++ b/src/nvim/api/private/helpers.c
@@ -8,6 +8,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "klib/kvec.h"
 #include "nvim/api/private/converter.h"
 #include "nvim/api/private/defs.h"
 #include "nvim/api/private/helpers.h"
@@ -22,7 +23,6 @@
 #include "nvim/ex_eval.h"
 #include "nvim/extmark.h"
 #include "nvim/highlight_group.h"
-#include "nvim/lib/kvec.h"
 #include "nvim/lua/executor.h"
 #include "nvim/map.h"
 #include "nvim/map_defs.h"
@@ -58,6 +58,7 @@ void try_enter(TryState *const tstate)
     .private_msg_list = NULL,
     .trylevel = trylevel,
     .got_int = got_int,
+    .did_throw = did_throw,
     .need_rethrow = need_rethrow,
     .did_emsg = did_emsg,
   };
@@ -65,6 +66,7 @@ void try_enter(TryState *const tstate)
   current_exception = NULL;
   trylevel = 1;
   got_int = false;
+  did_throw = false;
   need_rethrow = false;
   did_emsg = false;
 }
@@ -85,6 +87,7 @@ bool try_leave(const TryState *const tstate, Error *const err)
   assert(trylevel == 0);
   assert(!need_rethrow);
   assert(!got_int);
+  assert(!did_throw);
   assert(!did_emsg);
   assert(msg_list == &tstate->private_msg_list);
   assert(*msg_list == NULL);
@@ -93,6 +96,7 @@ bool try_leave(const TryState *const tstate, Error *const err)
   current_exception = tstate->current_exception;
   trylevel = tstate->trylevel;
   got_int = tstate->got_int;
+  did_throw = tstate->did_throw;
   need_rethrow = tstate->need_rethrow;
   did_emsg = tstate->did_emsg;
   return ret;
@@ -127,7 +131,7 @@ bool try_end(Error *err)
   force_abort = false;
 
   if (got_int) {
-    if (current_exception) {
+    if (did_throw) {
       // If we got an interrupt, discard the current exception
       discard_current_exception();
     }
@@ -146,7 +150,7 @@ bool try_end(Error *err)
     if (should_free) {
       xfree(msg);
     }
-  } else if (current_exception) {
+  } else if (did_throw) {
     api_set_error(err, kErrorTypeException, "%s", current_exception->value);
     discard_current_exception();
   }
@@ -214,6 +218,8 @@ Object dict_set_var(dict_T *dict, String key, Object value, bool del, bool retva
     return rv;
   }
 
+  bool watched = tv_dict_is_watched(dict);
+
   if (del) {
     // Delete the key
     if (di == NULL) {
@@ -221,6 +227,10 @@ Object dict_set_var(dict_T *dict, String key, Object value, bool del, bool retva
       api_set_error(err, kErrorTypeValidation, "Key not found: %s",
                     key.data);
     } else {
+      // Notify watchers
+      if (watched) {
+        tv_dict_watcher_notify(dict, key.data, NULL, &di->di_tv);
+      }
       // Return the old value
       if (retval) {
         rv = vim_to_object(&di->di_tv);
@@ -237,11 +247,16 @@ Object dict_set_var(dict_T *dict, String key, Object value, bool del, bool retva
       return rv;
     }
 
+    typval_T oldtv = TV_INITIAL_VALUE;
+
     if (di == NULL) {
       // Need to create an entry
       di = tv_dict_item_alloc_len(key.data, key.size);
       tv_dict_add(dict, di);
     } else {
+      if (watched) {
+        tv_copy(&di->di_tv, &oldtv);
+      }
       // Return the old value
       if (retval) {
         rv = vim_to_object(&di->di_tv);
@@ -251,6 +266,13 @@ Object dict_set_var(dict_T *dict, String key, Object value, bool del, bool retva
 
     // Update the value
     tv_copy(&tv, &di->di_tv);
+
+    // Notify watchers
+    if (watched) {
+      tv_dict_watcher_notify(dict, key.data, &tv, &oldtv);
+      tv_clear(&oldtv);
+    }
+
     // Clear the temporary variable
     tv_clear(&tv);
   }
@@ -462,7 +484,7 @@ bool buf_collect_lines(buf_T *buf, size_t n, int64_t start, bool replace_nl, Arr
       return false;
     }
 
-    const char *bufstr = (char *)ml_get_buf(buf, (linenr_T)lnum, false);
+    const char *bufstr = ml_get_buf(buf, (linenr_T)lnum, false);
     Object str = STRING_OBJ(cstr_to_string(bufstr));
 
     if (replace_nl) {
@@ -495,7 +517,7 @@ String buf_get_text(buf_T *buf, int64_t lnum, int64_t start_col, int64_t end_col
     return rv;
   }
 
-  const char *bufstr = (char *)ml_get_buf(buf, (linenr_T)lnum, false);
+  const char *bufstr = ml_get_buf(buf, (linenr_T)lnum, false);
   size_t line_length = strlen(bufstr);
 
   start_col = start_col < 0 ? (int64_t)line_length + start_col + 1 : start_col;