vis: refactor autoindent handling

Rather than inserting a newline and then looking for leading white space
of the previous line we now gather the white space before newline insertion.

Also we no longer indent empty lines.

Close #472

1 files changed, 1 insertions, 0 deletions

diff --git a/vis-core.h b/vis-core.h
index a1039a8..ab6e961 100644
--- a/vis-core.h
+++ b/vis-core.h
@@ -242,6 +242,7 @@ void macro_operator_record(Vis *vis);
 
 void vis_do(Vis *vis);
 void action_reset(Action*);
+size_t vis_text_insert_nl(Vis*, Text*, size_t pos);
 
 void mode_set(Vis *vis, Mode *new_mode);