added support for motions inside/around subword (i.e. word in snake_case / camelCase / etc.)

1 files changed, 36 insertions, 0 deletions

diff --git a/common/home/mosder/.config/nvim/init.lua b/common/home/mosder/.config/nvim/init.lua
index 61afa8c..296b9b1 100644
--- a/common/home/mosder/.config/nvim/init.lua
+++ b/common/home/mosder/.config/nvim/init.lua
@@ -336,6 +336,42 @@ do
       inside_next = 'ii',
     },
     n_lines = 500,
+    custom_textobjects = {
+      -- snake_case, camelCase, PascalCase, etc; all capitalizations
+      -- courtesy of https://github.com/bvngee
+      -- `is` works fine `as` doesn't - cba to change this
+      s = {
+        -- Lua 5.1 character classes and the undocumented frontier pattern:
+        -- https://www.lua.org/manual/5.1/manual.html#5.4.1
+        -- http://lua-users.org/wiki/FrontierPattern
+        -- note: when I say "letter" I technically mean "letter or digit"
+        {
+          -- Matches a single uppercase letter followed by 1+ lowercase letters.
+          -- This covers:
+          -- - PascalCaseWords (or the latter part of camelCaseWords)
+          '%u[%l%d]+%f[^%l%d]', -- An uppercase letter, 1+ lowercase letters, to end of lowercase letters
+
+          -- Matches lowercase letters up until not lowercase letter.
+          -- This covers:
+          -- - start of camelCaseWords (just the `camel`)
+          -- - snake_case_words in lowercase
+          -- - regular lowercase words
+          '%f[^%s%p][%l%d]+%f[^%l%d]', -- after whitespace/punctuation, 1+ lowercase letters, to end of lowercase letters
+          '^[%l%d]+%f[^%l%d]', -- after beginning of line, 1+ lowercase letters, to end of lowercase letters
+
+          -- Matches uppercase or lowercase letters up until not letters.
+          -- This covers:
+          -- - SNAKE_CASE_WORDS in uppercase
+          -- - Snake_Case_Words in titlecase
+          -- - regular UPPERCASE words
+          -- (it must be both uppercase and lowercase otherwise it will
+          -- match just the first letter of PascalCaseWords)
+          '%f[^%s%p][%a%d]+%f[^%a%d]', -- after whitespace/punctuation, 1+ letters, to end of letters
+          '^[%a%d]+%f[^%a%d]', -- after beginning of line, 1+ letters, to end of letters
+        },
+        '^().*()$',
+      },
+    },
   }
 
   -- Add/delete/replace surroundings (brackets, quotes, etc.)