On 15 May 2016, at 20:00, Hans Hagen
wrote: On 5/15/2016 7:44 PM, Hans Åberg wrote:
Invisibles of different semantic meaning are pretty tricky to use in the input, because it is hard to detect errors.
a proper monospace editor font would show it
In the Xcode text editor, one can show invisibles, but it does not tell which one, just showing a diamond, except for the NO-BREAK SPACE U+00A0, shown just as a space. In the mono-space font they are equal. If switching to the STIX fonts, suitable for math, then there is no THIN SPACE U+2009, so the editor switches to Lucida, in which it is nearly as wide as the no-break space. Otherwise, this editor has good Unicode support. So \, and \! will prevail, though it might be nice to have visually less intrusive commands.