Add support for single line terminals

This changes the minimum terminal dimensions from 2 lines and 2 columns,
to 1 line and 2 columns.

This also reworks the `SizeInfo` to store the number of columns and
lines and consistently has only the terminal lines/columns stored,
instead of including the message bar and search in some places of the
Alacritty renderer/input.

These new changes also make it easy to properly start the selection
scrolling as soon as the mouse is over the message bar, instead of
waiting until it is beyond it.

Fixes #4207.

Co-authored-by: Christian Duerr <contact@christianduerr.com>

1 files changed, 8 insertions, 5 deletions

diff --git a/alacritty/src/cli.rs b/alacritty/src/cli.rs
index 047c8d2e..6303d081 100644
--- a/alacritty/src/cli.rs
+++ b/alacritty/src/cli.rs
@@ -205,10 +205,10 @@ impl Options {
         }
 
         if let Some(mut dimensions) = matches.values_of("dimensions") {
-            let width = dimensions.next().map(|w| w.parse().map(Column));
-            let height = dimensions.next().map(|h| h.parse().map(Line));
-            if let (Some(Ok(width)), Some(Ok(height))) = (width, height) {
-                options.dimensions = Some(Dimensions::new(width, height));
+            let columns = dimensions.next().map(|columns| columns.parse().map(Column));
+            let lines = dimensions.next().map(|lines| lines.parse().map(Line));
+            if let (Some(Ok(columns)), Some(Ok(lines))) = (columns, lines) {
+                options.dimensions = Some(Dimensions { columns, lines });
             }
         }
 
@@ -309,7 +309,10 @@ impl Options {
         let dynamic_title = config.ui_config.dynamic_title() && self.title.is_none();
         config.ui_config.set_dynamic_title(dynamic_title);
 
-        replace_if_some(&mut config.ui_config.window.dimensions, self.dimensions);
+        if let Some(dimensions) = self.dimensions {
+            config.ui_config.window.set_dimensions(dimensions);
+        }
+
         replace_if_some(&mut config.ui_config.window.title, self.title.clone());
         replace_if_some(&mut config.ui_config.window.class.instance, self.class_instance.clone());
         replace_if_some(&mut config.ui_config.window.class.general, self.class_general.clone());