commit 859cc21c6b60af07b549456b7d050a03b3e48bc9
author Bram Moolenaar <Bram@vim.org> Mon Mar 28 15:22:35 2022 +0100
committer Bram Moolenaar <Bram@vim.org> Mon Mar 28 15:22:35 2022 +0100
tree f2b27da6d782dc353fa52f8055b900b78997c6c7
parent 471b3aed3e9c43d4dd53444ceb74f9a4f8a3874a

patch 8.2.4642: Vim9: in :def function script var cannot be null

Problem:    Vim9: in :def function script var cannot be null.
Solution:   Only initialize a script variable when not set to a null value.
            (closes #10034)

src/globals.h

diff --git a/src/globals.h b/src/globals.h
index 1319b1f..f690eff 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -405,6 +405,7 @@
 EXTERN type_T t_float INIT6(VAR_FLOAT, 0, 0, TTFLAG_STATIC, NULL, NULL);
 EXTERN type_T t_string INIT6(VAR_STRING, 0, 0, TTFLAG_STATIC, NULL, NULL);
 EXTERN type_T t_blob INIT6(VAR_BLOB, 0, 0, TTFLAG_STATIC, NULL, NULL);
+EXTERN type_T t_blob_null INIT6(VAR_BLOB, 0, 0, TTFLAG_STATIC, &t_void, NULL);
 EXTERN type_T t_job INIT6(VAR_JOB, 0, 0, TTFLAG_STATIC, NULL, NULL);
 EXTERN type_T t_channel INIT6(VAR_CHANNEL, 0, 0, TTFLAG_STATIC, NULL, NULL);