On 2011-07-15, Michael Everson <ever...@evertype.com> wrote: > On 15 Jul 2011, at 17:03, Doug Ewell wrote: > >> 1. Graphic symbols for control characters are needed so writers can write >> about the control characters themselves using plain text. > > This does not seem so unreasonable. The RTL and LTR overrides > *function* on the text when inserted into text. So you can't use > those with glyphs in a font to represent for example the UCS > dotted-boxes-with-letters, because they are control characters and > will affect the text.
Wouldn't it be more economical to encode a single UNICODE ESCAPE CHARACTER which forces the following character to be interpreted as a printable glyph rather than any control function? -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
