EDCHAR: The single-character text editor

Edchar is a full-featured text editor in a world where displays are only 1
character tall and 1 character wide. 

Building:
make edchar

Usage:
./edchar [FILENAME]
runs edchar. Optionally edits the new or existing file FILENAME.

Using edchar is somewhat similar to 
using vi, in that the user will move from mode to mode with 1-character
commands. 

Edchar will display a prompt to inform the user what it expects. The prompts
are:
    > The user should input 1 character. This is the prompt in normal mode, 
        insert mode, and replace mode.
    $ Insert a string and then press enter. This is the prompt in Insert or
        Replace mode.
    # Insert a positive integer and then press enter. This is the prompt when
        edchar needs the user to specify a length.
    Anything else: edchar is printing a message. Press any key to progress to
        the next character. When edchar is done with a message, it will 
        present a prompt. Errors usually start and end with "!". Edchar will
        acknowledge things with "K".

When in normal mode, the user is expected to input a command. The commands are:
    Command  Argument    Description   
    q                    Quits
    e        $           Opens new or existing file $ for editing.
    f                    Prints name of currently open file
    w                    Writes to currently open file
    W        $           Writes to file specified by $
    g                    Prints character currently under the cursor to screen
    G        #           Prints the character under the cursor and the next
                             # - 1 characters
    p                    Prints entire file
    r        >           Replace character under the cursor with >
    R        $           Replace characters from cursor position until the end
                             of the string $
    i        >           Insert a character > at cursor
    I        $           Insert string $ at cursor
    a        >           Append > after cursor
    A        $           Append string $ after cursor
    d                    Delete character under cursor
    D        #           Deletes # characters from cursor forward
    h                    Move cursor 1 character left
    l                    Move cursor 1 character right
    c                    Print current cursor position 
    #                    Move cursor to line specified by #
    ?                    Print help
    v                    Prints version info

Contact:
Maintained by Zachary Rubenstein ([email protected])