As of High Sierra, many of the Wide Character spacing issues have been fixed (most Emoji and all the Chinese Extentions C, D and E, now report 2). I'll note that this is on-par with the most recent Ubuntu release "artful" as well.
I only mention it here, because multiple threads in this list have talked about this problem (and wanting to see it fixed). As I reported earlier, the right fix has always been within libc / locale. The rest of this gets long, and I apologize. I'll note that the ones that are still problematic are old problems related to the fonts as some supposedly monospaced fonts properly use 1 space for them. For some glyphs, it seems near impossible to single-space them, but these are old issues. Some examples: Greek 03e2: Ϣ, Cyrilic 0x0460: Ѡ and 052a: Ԫ, Arabic 0604: , and 06de: ۞, Devanagari 0950: ॐ, etc. The other things are symbols that later became considered Emoji by some. Again, some fonts have single width glyphs available, some don't. More examples: 2318: ⌘ : PLACE OF INTEREST SIGN 231a: ⌚ : WATCH 231b: ⌛ : HOURGLASS 2328: ⌨ : KEYBOARD 2384: ⎄ : COMPOSITION SYMBOL 2386: ⎆ : ENTER SYMBOL 2387: ⎇ : ALTERNATIVE KEY SYMBOL 238c: ⎌ : UNDO SYMBOL 2393: ⎓ : DIRECT CURRENT SYMBOL FORM TWO 2397: ⎗ : PREVIOUS PAGE 2399: ⎙ : PRINT SCREEN SYMBOL 239a: ⎚ : CLEAR SCREEN SYMBOL 23ce: ⏎ : RETURN SYMBOL 23cf: ⏏ : EJECT SYMBOL 2487: ⒇ : PARENTHESIZED NUMBER TWENTY Thank you, Gary Allen
