# This files gives fallback from semi-graphic characters (from eg. IBM's cp437)
# to semi-graphic and ASCII approximations.

# Here's a UTF8 summary of those chars for testing through head(1):
#
# ┌─┬┐ ╔═╦╗ 
# │ ││ ║ ║║ ╒╤╕ ╓╥╖
# ├─┼┤ ╠═╬╣ ╞╪╡ ╟╫╢
# └─┴┘ ╚═╩╝ ╘╧╛ ╙╨╜

# These approximation might not be the best ones; fell free to send any
# improvements or alternatives.

# ASCII may give:
#
# -|=
#
# .+. .=:=.
# +++ :=:=:
# `+' `=:='


# single to double, then ASCII

U+2502 U+2551 U+007C
U+2500 U+2550 U+002D

U+250C U+255A U+002E
U+251C U+2560 U+002B
U+2514 U+255A U+0060

U+252C U+2566 U+002B
U+253C U+256C U+002B
U+2534 U+2569 U+002B

U+2510 U+2557 U+002E
U+2524 U+2563 U+002B
U+2518 U+255D U+002E


# double to single, then ASCII

U+2551 U+2502 U+007C
U+2550 U+2500 U+003D

U+255A U+250C U+002E
U+2560 U+251C U+003A
U+255A U+2514 U+0060

U+2566 U+252C U+003A
U+256C U+253C U+003A
U+2569 U+2534 U+003A

U+2557 U+2510 U+002E
U+2563 U+2524 U+003A
U+255D U+2518 U+002E

# mixed single/double to single, then double, then ASCII
# single vert + double horiz, then double V + single H

U+2552 U+250C U+255A U+002E
U+255E U+251C U+2560 U+003A
U+2558 U+2514 U+255A U+0060

U+2564 U+252C U+2566 U+003A
U+256A U+253C U+256C U+003A
U+2567 U+2534 U+2569 U+003A

U+2555 U+2510 U+2557 U+002E
U+2561 U+2524 U+2563 U+003A
U+255B U+2518 U+255D U+0027


U+2553 U+250C U+255A U+002E
U+255F U+251C U+2560 U+002B
U+2559 U+2514 U+255A U+0060

U+2565 U+252C U+2566 U+002B
U+256B U+253C U+256C U+002B
U+2568 U+2534 U+2569 U+002B

U+2556 U+2510 U+2557 U+002E
U+2562 U+2524 U+2563 U+002B
U+255C U+2518 U+255D U+0027