remove some support for long lines from source editor

A code editor is unlikely to need support for extremely long lines. And
that kind of scroll is jarring anyway in a code editor. We don't read
code like a novel, and less scroll per page implies more scrolling work.

I'd gotten rid of this functionality and the test for it [1] back in the
spokecone fork, but only took out the test when first pulling it into
the source editor.

[1] test_pagedown_often_shows_start_of_wrapping_line

1 files changed, 3 insertions, 0 deletions

diff --git a/text.lua b/text.lua
index 1f247e1..24fba90 100644
--- a/text.lua
+++ b/text.lua
@@ -617,6 +617,9 @@ function Text.move_cursor_down_to_next_text_line_while_scrolling_again_if_necess
     y = y + Drawing_padding_height + Drawing.pixels(State.lines[State.cursor1.line].h, State.width)
     State.cursor1.line = State.cursor1.line + 1
   end
+  if State.cursor1.pos == nil then
+    State.cursor1.pos = 1
+  end
   -- hack: insert a text line at bottom of file if necessary
   if State.cursor1.line > #State.lines then
     assert(State.cursor1.line == #State.lines+1)