Substitute missing glyphs in fonts

[mwisnicki]

Most fonts are missing many unicode glyphs, not just line drawing but also certain characters: ruby -e 'puts "\342\200\220"'

Should print something like ‐ or - (in ascii), which is commonly found in manual pages when LC_CTYPE=UTF-8.

Solutions:

1. Approximate with other symbol
2. Substitute with glyph from other font (which?)

Related:
http://code.google.com/p/mintty/issues/detail?id=130#c8

Wishlist:
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/unicode-mappings.html