Improve handling of import statements in GHCi (#20473)

Currently in GHCi, when given a line of user input we:

1. Attempt to parse and handle it as a statement
2. Otherwise, attempt to parse and handle a single import
3. Otherwise, check if there are imports present (and if so display an error message)
4. Otherwise, attempt to parse a module and only handle the declarations

This patch simplifies the process to:

Attempt to parse and handle it as a statement
Otherwise, attempt to parse a module and handle the imports and declarations

This means that multiple imports in a multiline are now accepted, and a multiline containing both imports and declarations is now accepted (as well as when separated by semicolons).

1 files changed, 1 insertions, 0 deletions

diff --git a/testsuite/tests/ghci/scripts/T10663.stdout b/testsuite/tests/ghci/scripts/T10663.stdout
new file mode 100644
index 0000000000..3169929f69
--- /dev/null
+++ b/testsuite/tests/ghci/scripts/T10663.stdout
@@ -0,0 +1 @@
+[1,2]
\ No newline at end of file