Commit: patch 9.2.0994: Vim9: No error for :open during compilation

patch 9.2.0994: Vim9: No error for :open during compilation

Commit: https://github.com/vim/vim/commit/18c7f93bbe9ac41922412a3a5eb2296539000a90
Author: Doug Kearns <[email protected]>
Date:   Fri Aug 21 15:37:24 2026 +0000

    patch 9.2.0994: Vim9: No error for :open during compilation
    
    Problem:  No error for :open during Vim9 compilation.
    Solution: Abort compilation with E1100, like other commands disallowed
              in Vim9 (Doug Kearns).
    
    closes: #21120
    
    Signed-off-by: Doug Kearns <[email protected]>
    Signed-off-by: Christian Brabandt <[email protected]>

diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index c82c01a0f..ad25a0a62 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -2034,6 +2034,8 @@ def Test_no_insert_xit()
   v9.CheckDefExecFailure(['a = 1'], 'E1100:')
   v9.CheckDefExecFailure(['c = 1'], 'E1100:')
   v9.CheckDefExecFailure(['i = 1'], 'E1100:')
+  v9.CheckDefExecFailure(['k = 1'], 'E1100:')
+  v9.CheckDefExecFailure(['o = 1'], 'E1100:')
   v9.CheckDefExecFailure(['t = 1'], 'E1100:')
   v9.CheckDefExecFailure(['x = 1'], 'E1100:')
 
@@ -2043,11 +2045,14 @@ def Test_no_insert_xit()
   v9.CheckScriptFailure(['vim9script', 'c'], 'E1100:')
   v9.CheckScriptFailure(['vim9script', 'i = 1'], 'E488:')
   v9.CheckScriptFailure(['vim9script', 'i'], 'E1100:')
+  v9.CheckScriptFailure(['vim9script', 'k = 1'], 'E1100:')
+  v9.CheckScriptFailure(['vim9script', 'k'], 'E1100:')
   v9.CheckScriptFailure(['vim9script', 'o = 1'], 'E1100:')
   v9.CheckScriptFailure(['vim9script', 'o'], 'E1100:')
-  v9.CheckScriptFailure(['vim9script', 't'], 'E1100:')
   v9.CheckScriptFailure(['vim9script', 't = 1'], 'E1100:')
+  v9.CheckScriptFailure(['vim9script', 't'], 'E1100:')
   v9.CheckScriptFailure(['vim9script', 'x = 1'], 'E1100:')
+  v9.CheckScriptFailure(['vim9script', 'x'], 'E1100:')
 enddef
 
 def s:IfElse(what: number): string
@@ -4845,6 +4850,11 @@ def Test_unsupported_commands()
   END
   v9.CheckDefAndScriptFailure(lines, 'E481:')
 
+  lines =<< trim END
+    o
+  END
+  v9.CheckDefAndScriptFailure(lines, 'E1100:')
+
   lines =<< trim END
     t
   END
diff --git a/src/version.c b/src/version.c
index 410454557..07c999989 100644
--- a/src/version.c
+++ b/src/version.c
@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    994,
 /**/
     993,
 /**/
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 5f51fdf6d..ab212ffb4 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -4777,6 +4777,7 @@ compile_def_function_body(
 	    case CMD_change:
 	    case CMD_insert:
 	    case CMD_k:
+	    case CMD_open:
 	    case CMD_t:
 	    case CMD_xit:
 		    not_in_vim9(&ea);

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