From: (adia@hellug.gr)
Date: Sun Jan 03 2010 - 16:46:23 CST
* Leslie Turriff [2010-01-02 20:50]:
> I would like to know if it is possible to combine the Box Drawings
> Light Horizontal (U+2500) or the Box Drawings Light Vertical (U+2502)
> characters with the Box Drawings Light Arc Down and Left/Down and
> Right/Up and Left/Up and Right (U+256D-U+2570) characters to make
> curving branches?
Are you looking for a way to do "Unicode extended ASCII art" with
these combinations? If so, I don't think it's possible, or at least
practical. There's no widely-supported generic mechanism to do arbitrary
combining of spacing characters.
If you were outputting text to a paper terminal that allowed
overstriking, or a graphical emulation of one, you could maybe do this
by backspacing. For example ─<BS>╮ would give a line branching right and
down. With a quich web search, I can't find a currently available
terminal emulator supporting this... does any? (Isn't this how APL
symbols were done once upon a time?)
Here's a live example:
─╮ ─╯
In an output system using smart fonts, you could do this with zero-width
joiner (ZWJ), provided you had a font that turned sequences with ZWJ
into the appropriate glyph. Of course no such font currently exists, but
it would be possible to create one.
─╮ ─╯
If I misunderstood your question, could you give some more details?
Alexandros
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