fix #21233, start REPL when script run with -i throws an error

NEWS.md

@@ -17,6 +17,13 @@ Language changes
     the macro (`@int128_str`, `@uint128_str`, `@big_str`, `@cmd`) qualified to refer
     to the `Core` module ([#29968]).
 
+Command-line option changes
+---------------------------
+
+  * When a script run in interactive mode (`-i`) throws an error, the REPL now starts after
+    the error is displayed. Previously the REPL only started if the script completed without
+    error ([#21233]).
+
 New library functions
 ---------------------
 

base/client.jl

@@ -263,7 +263,14 @@ function exec_options(opts)
         if !is_interactive
             ccall(:jl_exit_on_sigint, Cvoid, (Cint,), 1)
         end
-        include(Main, PROGRAM_FILE)
+        try
+            include(Main, PROGRAM_FILE)
+        catch err
+            invokelatest(display_error, err, catch_backtrace())
+            if !is_interactive
+                exit(1)
+            end
+        end
     end
     repl |= is_interactive
     if repl