4 files changed, 28 insertions, 10 deletions
diff --git a/src/nvim/api/autocmd.c b/src/nvim/api/autocmd.c
index 00a418367f..57f392f98e 100644
--- a/src/nvim/api/autocmd.c
+++ b/src/nvim/api/autocmd.c
@@ -535,10 +535,16 @@ cleanup:
 /// NOTE: Only autocommands created via the API have an id.
 /// @param id Integer The id returned by nvim_create_autocmd
 /// @see |nvim_create_autocmd()|
-void nvim_del_autocmd(Integer id)
+void nvim_del_autocmd(Integer id, Error *err)
   FUNC_API_SINCE(9)
 {
-  autocmd_delete_id(id);
+  if (id <= 0) {
+    api_set_error(err, kErrorTypeException, "Invalid autocmd id");
+    return;
+  }
+  if (!autocmd_delete_id(id)) {
+    api_set_error(err, kErrorTypeException, "Failed to delete autocmd");
+  }
 }
 
 /// Clear all autocommands that match the corresponding {opts}. To delete
@@ -678,11 +684,15 @@ Integer nvim_create_augroup(uint64_t channel_id, String name, Dict(create_augrou
 /// @param id Integer The id of the group.
 /// @see |nvim_del_augroup_by_name()|
 /// @see |nvim_create_augroup()|
-void nvim_del_augroup_by_id(Integer id)
+void nvim_del_augroup_by_id(Integer id, Error *err)
   FUNC_API_SINCE(9)
 {
-  char *name = augroup_name((int)id);
-  augroup_del(name, false);
+  TRY_WRAP({
+    try_start();
+    char *name = augroup_name((int)id);
+    augroup_del(name, false);
+    try_end(err);
+  });
 }
 
 /// Delete an autocommand group by name.
@@ -691,10 +701,14 @@ void nvim_del_augroup_by_id(Integer id)
 /// this group will also be deleted and cleared. This group will no longer exist.
 /// @param name String The name of the group.
 /// @see |autocommand-groups|
-void nvim_del_augroup_by_name(String name)
+void nvim_del_augroup_by_name(String name, Error *err)
   FUNC_API_SINCE(9)
 {
-  augroup_del(name.data, false);
+  TRY_WRAP({
+    try_start();
+    augroup_del(name.data, false);
+    try_end(err);
+  });
 }
 
 /// Execute all autocommands for {event} that match the corresponding
diff --git a/src/nvim/api/extmark.c b/src/nvim/api/extmark.c
index 797b64e2af..8dca37a321 100644
--- a/src/nvim/api/extmark.c
+++ b/src/nvim/api/extmark.c
@@ -259,9 +259,9 @@ ArrayOf(Integer) nvim_buf_get_extmark_by_id(Buffer buffer, Integer ns_id,
 ///   local pos = a.nvim_win_get_cursor(0)
 ///   local ns  = a.nvim_create_namespace('my-plugin')
 ///   -- Create new extmark at line 1, column 1.
-///   local m1  = a.nvim_buf_set_extmark(0, ns, 0, 0, 0, {})
+///   local m1  = a.nvim_buf_set_extmark(0, ns, 0, 0, {})
 ///   -- Create new extmark at line 3, column 1.
-///   local m2  = a.nvim_buf_set_extmark(0, ns, 0, 2, 0, {})
+///   local m2  = a.nvim_buf_set_extmark(0, ns, 0, 2, {})
 ///   -- Get extmarks only from line 3.
 ///   local ms  = a.nvim_buf_get_extmarks(0, ns, {2,0}, {2,0}, {})
 ///   -- Get all marks in this buffer + namespace.
diff --git a/src/nvim/autocmd.c b/src/nvim/autocmd.c
index d4af05b961..c0a22d058c 100644
--- a/src/nvim/autocmd.c
+++ b/src/nvim/autocmd.c
@@ -2350,17 +2350,20 @@ int autocmd_delete_event(int group, event_T event, char_u *pat)
 /// Deletes an autocmd by ID.
 /// Only autocmds created via the API have IDs associated with them. There
 /// is no way to delete a specific autocmd created via :autocmd
-void autocmd_delete_id(int64_t id)
+bool autocmd_delete_id(int64_t id)
 {
+  assert(id > 0);
   FOR_ALL_AUEVENTS(event) {
     FOR_ALL_AUPATS_IN_EVENT(event, ap) {
       for (AutoCmd *ac = ap->cmds; ac != NULL; ac = ac->next) {
         if (ac->id == id) {
           aucmd_del(ac);
+          return true;
         }
       }
     }
   }
+  return false;
 }
 
 // ===========================================================================
diff --git a/src/nvim/testdir/test_filetype.vim b/src/nvim/testdir/test_filetype.vim
index 839d160e39..dd08d8bd09 100644
--- a/src/nvim/testdir/test_filetype.vim
+++ b/src/nvim/testdir/test_filetype.vim
@@ -381,6 +381,7 @@ let s:filename_checks = {
     \ 'opam': ['opam', 'file.opam', 'file.opam.template'],
     \ 'openroad': ['file.or'],
     \ 'ora': ['file.ora'],
+    \ 'org': ['file.org', 'file.org_archive'],
     \ 'pamconf': ['/etc/pam.conf', '/etc/pam.d/file', 'any/etc/pam.conf', 'any/etc/pam.d/file'],
     \ 'pamenv': ['/etc/security/pam_env.conf', '/home/user/.pam_environment', '.pam_environment', 'pam_env.conf'],
     \ 'papp': ['file.papp', 'file.pxml', 'file.pxsl'],