Added a markdown file to keep track of overall ideas for led.

ideas.md

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+# General
+
+- Persistent editing state, so you can close and open a file (or the entire editor) and still keep your unsaved edits.
+- No concept of tabs or open-but-invisible buffers.  The only open files are the ones you see.
+- Persistent, infinite undo.
+- Auto-file saving by default, so you never have "dirty" buffers.  The zed-app workflow.
+
+# UI
+
+- Split view, but only auto-layout.  The user just specifies how many views they want, and the editor figures out how to lay them out.  Probably the user can tweak knobs for how the auto-layout works.
+- Only text-wrapped views, no horizontal scrolling.  But the text wrapping needs to be good, e.g. preserving indent level etc.

todo.md

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-- Syntax highlighting:
-    - It's tempting to want to do syntax highlighting only on the bare
-      minimum parts of the text after an edit, but realistically there
-      are always cases where the entire text has to be scanned again to
-      get correct results.  So it must be something that can be done
-      asynchronously.
-    - Maybe a quick-n-dirty local update, followed by an async background
-      update.
-    - Should the syntax highlighting data be stored in the text buffer itself?
-      Or should there be an accompanying structure on the side for that?
-    - What do other editors do?
-
-- Text encoding support:
-    - Buffers need to know what encoding they represent.
-    - Loading/saving code for different encodings.
-    - Auto-detecting text encodings from file data (this one will be tricky).
-
-- Word wrap.
-- Get non-wrapping text working again.
-- File opening by entering path
-- UI that wraps editors, for split view.
-- Persistent infinite undo
-- "Projects"