Better space coalescing logic 🌧

This creates a smaller state machine helper type for softness coalescing, which does not own the resulting nodes. While this creates a bit more duplication in stack and par builder, it makes it a lot easier to integrate additional logic into the paragraph builder.

Furthermore:
- Line breaks are now "hard", that is, not coalesced with each other.
- Text nodes with equal style are now merged allowing for example `f{}i` to form a ligature.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/library/align.rs b/src/library/align.rs
index d5811bf4..ccb25b34 100644
--- a/src/library/align.rs
+++ b/src/library/align.rs
@@ -52,7 +52,7 @@ pub fn align(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
         if let Some(vertical) = vertical {
             ctx.state.aligns.main = vertical.to_align(Dir::TTB);
             if ctx.state.aligns.main != snapshot.aligns.main {
-                ctx.push_linebreak();
+                ctx.parbreak();
             }
         }