patch 8.2.2951: Vim9: cannot use heredoc for :python, :lua, etc.
Problem: Vim9: cannot use heredoc in :def function for :python, :lua, etc.
Solution: Concatenate the heredoc lines and pass them in the ISN_EXEC_SPLIT
instruction.
diff --git a/src/vim9.h b/src/vim9.h
index 6bc277d..d4d3b7d 100644
--- a/src/vim9.h
+++ b/src/vim9.h
@@ -14,6 +14,7 @@
typedef enum {
ISN_EXEC, // execute Ex command line isn_arg.string
ISN_EXECCONCAT, // execute Ex command from isn_arg.number items on stack
+ ISN_EXEC_SPLIT, // execute Ex command from isn_arg.string split at NL
ISN_LEGACY_EVAL, // evaluate expression isn_arg.string with legacy syntax.
ISN_ECHO, // echo isn_arg.echo.echo_count items on top of stack
ISN_EXECUTE, // execute Ex commands isn_arg.number items on top of stack