include letter Ø as common 0 lookalike

Programming fonts regularly use a slashed zero to distinguish the number,
but in some cases make it look very similar to the scandinavian vowel.
In low quality could even be mistaken for 8 shown subsequently.

Confusion with the symbols ∅ and ⌀ is less likely, usually having a
different shape, as do glyphs representing a dotted digit 0 (ʘ, ☉, ⊙, ⨀).

diff --git a/unicode.txt b/unicode.txt
index cea08035104785539d8c53687ea6991417bd63e7..0b14c1711d0856dcb76a7d80e0092883a4808a35 100644 (file)
--- a/unicode.txt
+++ b/unicode.txt
@@ -50,7 +50,7 @@ Mathematics and sciences:
 
 Proper typography:
 
-  • Lookalikes: 1lI|, 0OD, 8B, 2Z, 5S$
+  • Lookalikes: 1lI|, 0ODØ, 8B, 2Z, 5S$
   • “It’s ‘quoted’”, „deutsche ‚Gänsefüßchen‘“, « guillemets ‹comme ci› »
   • u + ¨ + ´ = ǘ, o + ~ + ¯ = ȭ, e + ^ + ` = ề, e + ¸ + ˘ = ḝ
   • 1 + 2 − 3 × 4 ÷ 5 ≈ 0–1‰ — 0° 21′ 36″