Don't force immediate interactive without `-i` (#354)

* Don't force immediate interactive without -i

Sometimes we might want to use a reverse prompt but we want to let the
model generate tokens right after the initial prompt. So we don't force
user input mode if the -i flag wasn't specified and instead let it run
until we encounter the reverse prompt.

This gives use some more flexibility, since it doesn't force the user to
enter a newline if they want to let the model generate text right after
the initial prompt and only be asked for input if the reverse prompt is
encountered.

The `--interactive-first` flag is reintroduced to force the old
behavior. `-r` behaves like `-i` plus introduces a reverse prompt (it
can be specified more than once).

* Update help output.

---------

Co-authored-by: Johnman <tjohnman@github>

1 files changed, 5 insertions, 1 deletions

diff --git a/main.cpp b/main.cpp
index fbb43a8..4569ef2 100644
--- a/main.cpp
+++ b/main.cpp
@@ -254,6 +254,10 @@ int main(int argc, char ** argv) {
         params.interactive = true;
     }
 
+    if (params.interactive_start) {
+        params.interactive = true;
+    }
+
     fprintf(stderr, "\n");
     fprintf(stderr, "%s: prompt: '%s'\n", __func__, params.prompt.c_str());
     fprintf(stderr, "%s: number of tokens in prompt = %zu\n", __func__, embd_inp.size());
@@ -296,7 +300,7 @@ int main(int argc, char ** argv) {
 #endif
                " - Press Return to return control to LLaMa.\n"
                " - If you want to submit another line, end your input in '\\'.\n\n");
-        is_interacting = true;
+        is_interacting = params.interactive_start;
     }
 
     int input_consumed = 0;