It is said that URL should not contain spaces. Anyway, we use regular
expression syntax highlighting to complement PEG Markdown Highlight.
Signed-off-by: Le Tan <tamlokveer@gmail.com>
1. Remove Ctrl+ALT Vim mode. Now Ctrl+D will enter the Vim mode
tempararily and only expires after NOT hitting commands for a while;
2. Add d and dd to delete text. 'd2j' is not supported;
3. x will cut the selected text.
Signed-off-by: Le Tan <tamlokveer@gmail.com>
