[gdb/tui] Fix secondary prompt

With CLI, a session defining a command looks like:
...
(gdb) define foo
Type commands for definition of "foo".
End with a line saying just "end".
>bar
>end
(gdb)
...

With TUI however, we get the same secondary prompts, and type the same, but
are left with:
...
(gdb) define foo
Type commands for definition of "foo".
End with a line saying just "end".
(gdb)
...

Fix this by calling tui_inject_newline_into_command_window in
gdb_readline_wrapper_line, as is done in tui_command_line_handler.

Tested on x86_64-linux.

PR tui/30636
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30636

1 files changed, 6 insertions, 0 deletions

diff --git a/gdb/top.c b/gdb/top.c
index 90ddc5f..2322e55 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -77,6 +77,7 @@
 
 #if defined(TUI)
 # include "tui/tui.h"
+# include "tui/tui-io.h"
 #endif
 
 #ifndef O_NOCTTY
@@ -958,6 +959,11 @@ gdb_readline_wrapper_line (gdb::unique_xmalloc_ptr<char> &&line)
   saved_after_char_processing_hook = after_char_processing_hook;
   after_char_processing_hook = NULL;
 
+#if defined(TUI)
+  if (tui_active)
+    tui_inject_newline_into_command_window ();
+#endif
+
   /* Prevent parts of the prompt from being redisplayed if annotations
      are enabled, and readline's state getting out of sync.  We'll
      reinstall the callback handler, which puts the terminal in raw