Created By Ingo Karkat (https://github.com/inkarkat)
Vim provides many built-in motions, e.g. to move to the next word, or end of the current word. Most programming languages use either CamelCase ("anIdentifier") or underscore_notation ("an_identifier") naming conventions for identifiers. The best way to navigate inside those identifiers using Vim built-in motions is the [count]f{char} motion, i.e. f{uppercase-char} or f_, respectively. But we can make this easier:
This script defines motions '<leader>w', '<leader>b' and '<leader>e' (similar to 'w', 'b', 'e'), which do not move word-wise (forward/backward), but Camel-wise; i.e. to word boundaries and uppercase letters. The motions also work on underscore notation, where words are delimited by underscore ('_') characters. From here on, both CamelCase and underscore_notation entities are referred to as "words" (in double quotes). Just like with the regular motions, a [count] can be prepended to move over multiple "words" at once. Outside of "words" (e.g. in non-keyword characters like // or ;), the new motions move just like the regular motions.
Vim provides a built-in 'iw' text object called 'inner word', which works in operator-pending and visual mode. Analog to that, this script defines inner "word" motions 'i<leader>w', 'i<leader>b' and 'i<leader>e', which select the "word" (or multiple "words" if a [count] is given) where the cursor is located.
The new motions are '<leader>w', '<leader>b' and '<leader>e', all of which can be used in normal mode, operator-pending mode (cp. :help operator), and visual mode. For example, type 'bc<leader>w' to change 'Camel' in 'CamelCase' to something else.
The <leader> string is defined with the mapleader variable in vim, and
defaults to the backslash character (\). Therefore, the motions defined by
this plugin would resolve to '\w', '\b' and '\e'. Some vim users prefer to use
the comma key (,), which you may have already defined in your vimrc. To
check your current mapleader, execute:
:let mapleader
If you get an error, you are still using the default (\). If you wish to
define a new mapleader, try:
:let mapleader = "your_new_mapleader_string"
Drop the : if you are defining the mapleader in your vimrc. For more
information about mapleader, check out:
:help mapleader
Motions Example
Given the following CamelCase identifiers in a source code fragment:
set Script31337PathAndNameWithoutExtension11=%~dpn0 set Script31337PathANDNameWITHOUTExtension11=%~dpn0
and the corresponding identifiers in underscore_notation:
set script_31337_path_and_name_without_extension_11=%~dpn0 set SCRIPT_31337_PATH_AND_NAME_WITHOUT_EXTENSION_11=%~dpn0
<leader>w moves to ([x] is cursor position): [s]et, [s]cript, [3]1337, [p]ath, [a]nd, [n]ame, [w]ithout, [e]xtension, [1]1, [d]pn0, dpn[0], [s]et
<leader>b moves to: [d]pn0, [1]1, [e]xtension, [w]ithout, ...
<leader>e moves to: se[t], scrip[t], 3133[7], pat[h], an[d], nam[e], withou[t], extensio[n], 1[1], dpn[0]
Inner Motions Example Given the following identifier, with the cursor positioned at [x]:
script_31337_path_and_na[m]e_without_extension_11
v3i<leader>w selects script_31337_path_and_[name_without_extension_]11
v3i<leader>b selects script_31337_[path_and_name]_without_extension_11
v3i<leader>e selects script_31337_path_and_[name_without_extension]_11
Instead of visual mode, you can also use c3i<leader>w to change, d3i<leader>w to delete, gU3i<leader>w to upper-case, and so on.
Source
Based on http://vim.wikia.com/wiki/Moving_through_camel_case_words by Anthony Van Ham.
This script is packaged as a vimball. If you have the "gunzip" decompressor
in your PATH, simply edit the *.vba.gz package in Vim; otherwise, decompress
the archive first, e.g. using WinZip. Inside Vim, install by sourcing the
vimball or via the :UseVimball command.
vim camelcasemotion.vba.gz :so %
To uninstall, use the :RmVimball command.
Dependencies
Requires Vim 7.0 or higher.
Configuration
If you want to use different mappings, map your keys to the
<Plug>CamelCaseMotion_? mapping targets _before_ sourcing this script (e.g. in
your .vimrc).
Example: Use 'W', 'B' and 'E':
map <S-W> <Plug>CamelCaseMotion_w map <S-B> <Plug>CamelCaseMotion_b map <S-E> <Plug>CamelCaseMotion_e
Example: Replace the default 'w', 'b' and 'e' mappings instead of defining additional mappings '<leader>w', '<leader>b' and '<leader>e':
map <silent> w <Plug>CamelCaseMotion_w map <silent> b <Plug>CamelCaseMotion_b map <silent> e <Plug>CamelCaseMotion_e sunmap w sunmap b sunmap e
Example: Replace default 'iw' text-object and define 'ib' and 'ie' motions:
omap <silent> iw <Plug>CamelCaseMotion_iw xmap <silent> iw <Plug>CamelCaseMotion_iw omap <silent> ib <Plug>CamelCaseMotion_ib xmap <silent> ib <Plug>CamelCaseMotion_ib omap <silent> ie <Plug>CamelCaseMotion_ie xmap <silent> ie <Plug>CamelCaseMotion_ie