1 # common meaning of second character
17 ; Ogonek (+Retroflex Hook/Tail)
29 % Greek/Cyrillic special
30 + lc: Arabic, uc: Hebrew
31 3 some Latin/Greek/Cyrillic letters
33 5 Hiragana (also lc + a/e/i/o/u)
34 6 Katakana (also uc + a/e/i/o/u)
35 J + Korean Jamo (also K)
38 # common first character
46 #Eu € # in zsh and vim
47 =B ฿ # more like B/, but prefer that for diacritical letter
49 =g ₴ # derived from cursive g= (soundalike h= or lookalike 2= seem bad options)
53 =p ₱ # =P conflicts with vim alternative for ruble
54 =R ₹ # conflicts with vim alternative for ruble
62 3: … # opposite of ⋮ (more logical would be to swap with .3 ⋯)
69 +0 ⊕ # 0+ already in use
72 0* ⊛ #XXX alternatively ⍟
74 0% ⦼ # no circled percent, but close
78 0! ⦶ # no circled exclamation mark
79 .1 ․ # obvious location, even though ‥ and … are at inconsistent .. and 3:
85 <3 ♥ # rfc has trigraph cH-
86 :) ☺ # easy alias to 0u
88 FU 🖕 # common abbreviation for middle finger
95 # obvious line drawing gaps
99 dD ╷ # goddamn! stupid arabic dad got there first
108 2- ╌ # exactly like to 3 and 4
112 BF ╳ # FD and BD combined; FB already in use
115 HW Ƕ # HV conflicts with vh line drawing
119 # old/middle english (uncommon)
120 WY Ƿ # replaced by UU, later W
125 S1 Ʃ # can't use SH or ES
126 s1 ʃ # can't use sh; keep es for subscript
130 !C ǀ # corresponding zulu letter
131 !Q ǃ # idem; !. for lookalike (previously ʗ)
132 !X ǁ # idem; !/ for lookalike (previously ʖ)
133 !A ǂ # Alveolar; !- looks alike, != even more so but already occupied
135 !R ‼ # Retroflex (or Repeated); !! looks alike but occupied
137 R! Ȑ # no R-grave; double down
139 S! Ș # no S-grave; comma in use for cedilla, so misusing grave seems only fair
141 T! Ț # no T-grave; like S!
146 #es ₑ #TODO: move esh
159 #ts ₜ # both ts and Ts in use for Ћ
164 # superscripts (modifier letters)
165 AS ᵃ # alef was first for aS
170 #fS ᶠ # both fS and FS in use
178 #nS ⁿ # already present
191 # capital superscripts; avoid as most *S are in use
212 # expected but missing
215 #A0 Ǻ # normal A-ring already provided by AA
224 Y- Ȳ # conflicts with vim alternative for yen
226 'i ͺ # spacing iota subscript (like "i for combining)
229 Ac ℀ # prefer common A-smallcap for ac
230 As ℁ # prefer common a-subscript for as
231 cu ℆ # co ís present though
239 a" ǟ # a1 # long umlauted, very similar to double acute
241 jo ё # io # consistent with ja/ju
245 Z1 Ʒ # ED # doesn't make sense, put it with S1
246 z1 ʒ # ed # not in vim
247 =Y ¥ # Ye # also Y- in vim
267 l- ƚ # not really a macron, but wouldn't really make sense anyway otherwise
279 # middle tilde #XXX: not tilde above
284 ##n? ᵰ # already a tilde above
292 # not used all that much, better leave x) free
299 #I) Ȋ # )I exists, but should not confuse
309 # usage is similar to inverted breve, just as rare
332 #D2 Ɗ # in use by control char
338 F, Ƒ # described as hook, but similar to cedilla
339 f, ƒ # replaces more specialised f( and Fl, unified nowadays
342 H2 Ɦ # different hook from lowercase
344 HG Ꜧ # similar to NG, distinct from ꞕ ḩ ⱨ
354 #P2 Ƥ # in use by control char
371 Y; Ƴ # not a hook below, but Y2 hook above is already present
373 Z, Ȥ # prefer cedilla similarity like F,
377 # curls (9 is mostly free because horns are so rare)
380 j9 ʝ # crossed-tail actually
390 #2/ ƻ # rarely used, and double dash is far more logical
398 # turned/inverted (trailing I is uncommon for lowercase, and already used thusly for !I, ?I and NI)
402 #EI Ǝ # would be confusing, as it's not uppercase schwa eI
403 eI ə # schwa, not turned E (latter is very uncommon)
415 #nI ᴎ # reversed capital N, but NI already in use
417 #RI ᴚ # conflicts with RI control char
426 oE ɶ # Oe also available, but E looks capital
428 Ap ɒ #XXX Ao? (AO in use)
441 Op ɤ #XXX oy would look alike
445 #lp ɬ #XXX: lb for 'belt'
455 mL ɰ # like rL (XXX mp?)
457 # small caps (also possible at *s)
466 # more from phonetics extensions
478 sC ꜱ # sc/Sc/SC in use
484 # hangeul jamo consonants at *J
506 # hangeul jamo vowels at *J
525 # hangeul jamo iotized vowels at *K (for Korean)
532 # common formatting control
533 ZS # ZWSP; capitals like other Cc
534 ZN # ZWNJ; less obvious alt: 'Z
535 ZW # ZWJ; ZJ somewhy used for tsadi; less obvious alt: "Z
537 RL # RLM; keep rl for ɼ
540 # under development or temporary
543 $PR ► # current PR should be TR
544 $PL ◄ # current PL should be TL
545 $'> ˆ # where to put ^?
546 $'? ˜ # where to put ~?
548 $?" ΅ # tonos+dialytika
571 # rfc (incorrectly?) maps double to heavy