ft_raku.txt (4212B)
1 *ft_raku.txt* The Raku programming language filetype 2 3 *vim-raku* 4 5 Vim-raku provides syntax highlighting, indentation, and other support for 6 editing Raku programs. 7 8 1. Using Unicode in your Raku files |raku-unicode| 9 10 ============================================================================== 11 1. Using Unicode in your Raku files *raku-unicode* 12 13 Defining new operators using Unicode symbols is a good way to make your 14 Raku program easy to read. See: 15 https://perl6advent.wordpress.com/2012/12/18/day-18-formulas-resistance-is-futile/ 16 17 While Raku does define ASCII alternatives for some common operators (see 18 https://docs.raku.org/language/unicode_ascii), using the full range of 19 Unicode operators is highly desirable. Your operating system provides input 20 facilities, but using the features built in to Vim may be preferable. 21 22 The natural way to produce these symbols in Vim is to use digraph shortcuts 23 (:help |digraphs-use|). Many of them are defined; type `:digraphs` to get 24 the list. A convenient way to read the list of digraphs is to save them in a 25 file. From the shell: > 26 vim +'redir >/tmp/vim-digraphs-listing.txt' +digraphs +'redir END' +q 27 28 Some of them are available with standard Vim digraphs: 29 << « /0 ∅ !< ≮ ~ 30 >> » Ob ∘ !> ≯ ~ 31 ., … 00 ∞ (C ⊂ ~ 32 (U ∩ -: ÷ )C ⊃ ~ 33 )U ∪ (_ ⊆ >= ≥ ~ 34 ?= ≅ )_ ⊇ =< ≤ ~ 35 (- ∈ ?= ≅ != ≠ ~ 36 -) ∋ ?- ≃ ~ 37 38 The Greek alphabet is available with "*" followed by a similar Latin symbol: > 39 *p π 40 *t τ 41 *X × 42 43 Numbers, subscripts and superscripts are available with 's' and 'S': 44 0s ₀ 0S ⁰ ~ 45 1s ₁ 1S ¹ ~ 46 2s ₂ 9S ⁹ ~ 47 48 But some don't come defined by default. Those are digraph definitions you can 49 add in your ~/.vimrc file. > 50 exec 'digraph \\ ' .. char2nr('∖') 51 exec 'digraph \< ' .. char2nr('≼') 52 exec 'digraph \> ' .. char2nr('≽') 53 exec 'digraph (L ' .. char2nr('⊈') 54 exec 'digraph )L ' .. char2nr('⊉') 55 exec 'digraph (/ ' .. char2nr('⊄') 56 exec 'digraph )/ ' .. char2nr('⊅') 57 exec 'digraph )/ ' .. char2nr('⊅') 58 exec 'digraph U+ ' .. char2nr('⊎') 59 exec 'digraph 0- ' .. char2nr('⊖') 60 " Euler's constant 61 exec 'digraph ne ' .. char2nr('𝑒') 62 " Raku's atomic operations marker 63 exec 'digraph @@ ' .. char2nr('⚛') 64 65 Alternatively, you can write Insert mode abbreviations that convert ASCII- 66 based operators into their single-character Unicode equivalent. > 67 iabbrev <buffer> !(<) ⊄ 68 iabbrev <buffer> !(<=) ⊈ 69 iabbrev <buffer> !(>) ⊅ 70 iabbrev <buffer> !(>=) ⊉ 71 iabbrev <buffer> !(cont) ∌ 72 iabbrev <buffer> !(elem) ∉ 73 iabbrev <buffer> != ≠ 74 iabbrev <buffer> (&) ∩ 75 iabbrev <buffer> (+) ⊎ 76 iabbrev <buffer> (-) ∖ 77 iabbrev <buffer> (.) ⊍ 78 iabbrev <buffer> (<) ⊂ 79 iabbrev <buffer> (<+) ≼ 80 iabbrev <buffer> (<=) ⊆ 81 iabbrev <buffer> (>) ⊃ 82 iabbrev <buffer> (>+) ≽ 83 iabbrev <buffer> (>=) ⊇ 84 iabbrev <buffer> (\|) ∪ 85 iabbrev <buffer> (^) ⊖ 86 iabbrev <buffer> (atomic) ⚛ 87 iabbrev <buffer> (cont) ∋ 88 iabbrev <buffer> (elem) ∈ 89 iabbrev <buffer> * × 90 iabbrev <buffer> **0 ⁰ 91 iabbrev <buffer> **1 ¹ 92 iabbrev <buffer> **2 ² 93 iabbrev <buffer> **3 ³ 94 iabbrev <buffer> **4 ⁴ 95 iabbrev <buffer> **5 ⁵ 96 iabbrev <buffer> **6 ⁶ 97 iabbrev <buffer> **7 ⁷ 98 iabbrev <buffer> **8 ⁸ 99 iabbrev <buffer> **9 ⁹ 100 iabbrev <buffer> ... … 101 iabbrev <buffer> / ÷ 102 iabbrev <buffer> << « 103 iabbrev <buffer> <<[=]<< «=« 104 iabbrev <buffer> <<[=]>> «=» 105 iabbrev <buffer> <= ≤ 106 iabbrev <buffer> =~= ≅ 107 iabbrev <buffer> >= ≥ 108 iabbrev <buffer> >> » 109 iabbrev <buffer> >>[=]<< »=« 110 iabbrev <buffer> >>[=]>> »=» 111 iabbrev <buffer> Inf ∞ 112 iabbrev <buffer> atomic-add-fetch ⚛+= 113 iabbrev <buffer> atomic-assign ⚛= 114 iabbrev <buffer> atomic-fetch ⚛ 115 iabbrev <buffer> atomic-dec-fetch --⚛ 116 iabbrev <buffer> atomic-fetch-dec ⚛-- 117 iabbrev <buffer> atomic-fetch-inc ⚛++ 118 iabbrev <buffer> atomic-inc-fetch ++⚛ 119 iabbrev <buffer> atomic-sub-fetch ⚛−= 120 iabbrev <buffer> e 𝑒 121 iabbrev <buffer> o ∘ 122 iabbrev <buffer> pi π 123 iabbrev <buffer> set() ∅ 124 iabbrev <buffer> tau τ 125 < 126 vim:tw=78:ts=8:noet:ft=help:norl: