Add unicode autosnippets.

users/jrpotter/neovim/config/utf8/snippets.lua

@@ -4,12 +4,157 @@ local s = ls.snippet
 local t = ls.text_node
 
 return {
+  -- Subscripts
   s(
-    {
+    { trig = [[_1]], wordTrig = false },
-      trig = [[\_1]],
-      wordTrig = false,
-      snippetType = 'autosnippet',
-    },
     t('₁')
-  )
+  ),
+  s(
+    { trig = [[_2]], wordTrig = false },
+    t('₂')
+  ),
+  s(
+    { trig = [[_3]], wordTrig = false },
+    t('₃')
+  ),
+  s(
+    { trig = [[_4]], wordTrig = false },
+    t('₄')
+  ),
+  s(
+    { trig = [[_5]], wordTrig = false },
+    t('₅')
+  ),
+  s(
+    { trig = [[_6]], wordTrig = false },
+    t('₆')
+  ),
+  s(
+    { trig = [[_7]], wordTrig = false },
+    t('₇')
+  ),
+  s(
+    { trig = [[_8]], wordTrig = false },
+    t('₈')
+  ),
+  s(
+    { trig = [[_9]], wordTrig = false },
+    t('₉')
+  ),
+  s(
+    { trig = [[_a]], wordTrig = false },
+    t('ₐ')
+  ),
+  s(
+    { trig = [[_i]], wordTrig = false },
+    t('ᵢ')
+  ),
+  s(
+    { trig = [[_j]], wordTrig = false },
+    t('ⱼ')
+  ),
+  s(
+    { trig = [[_k]], wordTrig = false },
+    t('ₖ')
+  ),
+  s(
+    { trig = [[_m]], wordTrig = false },
+    t('ₘ')
+  ),
+  s(
+    { trig = [[_n]], wordTrig = false },
+    t('ₙ')
+  ),
+
+  -- Lists
+  s(
+    { trig = [[.]], wordTrig = false },
+    t('·')
+  ),
+  s(
+    { trig = [[circ]], wordTrig = false },
+    t('∘')
+  ),
+
+  -- Arrows
+  s(
+    { trig = [[d]], wordTrig = false },
+    t('↓')
+  ),
+  s(
+    { trig = [[l]], wordTrig = false },
+    t('←')
+  ),
+  s(
+    { trig = [[←r]], wordTrig = false },
+    t('↔')
+  ),
+  s(
+    { trig = [[r]], wordTrig = false },
+    t('→')
+  ),
+  s(
+    { trig = [[u]], wordTrig = false },
+    t('↑')
+  ),
+
+  -- Greek letters
+  s(
+    { trig = [[a]], wordTrig = false },
+    t('α')
+  ),
+  s(
+    { trig = [[b]], wordTrig = false },
+    t('β')
+  ),
+  s(
+    { trig = [[g]], wordTrig = false },
+    t('γ')
+  ),
+  s(
+    { trig = [[e]], wordTrig = false },
+    t('ε')
+  ),
+  s(
+    { trig = [[pi]], wordTrig = false },
+    t('π')
+  ),
+  s(
+    { trig = [[s]], wordTrig = false },
+    t('σ')
+  ),
+  s(
+    { trig = [[z]], wordTrig = false },
+    t('ζ')
+  ),
+
+  -- Other operators
+  s(
+    { trig = [[neg]], wordTrig = false },
+    t('¬')
+  ),
+  s(
+    { trig = [[αn]], wordTrig = false },
+    t('∧')
+  ),
+  s(
+    { trig = [[or]], wordTrig = false },
+    t('∨')
+  ),
+  s(
+    { trig = [[imp]], wordTrig = false },
+    t('⇒')
+  ),
+  s(
+    { trig = [[iff]], wordTrig = false },
+    t('⇔')
+  ),
+  s(
+    { trig = [[cap]], wordTrig = false },
+    t('∩')
+  ),
+  s(
+    { trig = [[cup]], wordTrig = false },
+    t('∪')
+  ),
 }

users/jrpotter/neovim/default.nix

@@ -31,7 +31,9 @@ let
     plugin = pkgs.vimPlugins.luasnip;
     config = ''
       require('utils.luasnip').setup()
-      require('luasnip').add_snippets('all', require('utf8.snippets'))
+      require('luasnip').add_snippets('all', require('utf8.snippets'), {
+        type = 'autosnippets',
+      })
       ${config.programs.neovim.nvim-snippets}
     '';
   };