Feature requests: keyboard shortcuts, search

Love this! Some suggestions:

1. The space-bar should also be a default shortcut for PAGE_DOWN, like it is in more and less.
2. The vim-like shortcuts for paging up and down should include Ctrl-U for PAGE_UP and Ctrl-D for PAGE_DOWN.
3. At the end of a chapter, PAGE_DOWN should take me to the next chapter, just like turning a page in a book.
4. Search would be great! Again, more and less offer a good model for keyboard shortcuts that will be familiar to most users.
5. (This is a reach but): vim-like counts would be cool: e.g., “5j” goes down 5 lines; 3l jumps three chapters forward…

[wustho]

1. Added search function, though only capable of finding text that span across single line.

[dsanson]

I am super busy with other things right now, but I’d be happy to try to make a clean pull request in a week or two. The basic idea behind the algorithm I used (which may not be the best) is:

• as part of the basic loop detecting key presses, check numeral key presses and combine successive numeral key presses into a count. (This is easiest to do by concatenating the numerals into a string, which can later be converted to an integer.)
• when a motion command is detected, check to see the value of the count. If there is no count, then do it once. Otherwise, do it count times, and reset the count to the empty string.