This is one word under Vim's definition:

CamelCaseACRONYMWords_underscore1234
w--------------------------------->w
e--------------------------------->e
b<---------------------------------b

With this plugin, this becomes six words:

CamelCaseACRONYMWords_underscore1234
w--->w-->w----->w---->w-------->w->w
e-->e-->e----->e--->e--------->e-->e
b<---b<--b<-----b<----b<--------b<-b

A word (lowercase) is any of the following:

A WORD (uppercase) is any sequence of non-space characters separated by spaces.

Default word/WORD mappings:

You do NOT need any of the mapping customizations below if the default mappings already work for you.

Use g:wordmotion_prefix to apply a common prefix to each of the default word motion mappings.

Use g:wordmotion_mappings to individually replace the default word motion mappings. g:wordmotion_mappings is a dictionary where the keys are the default mappings and the values are the mappings that you want to replace them with. Unspecified entries will still use the default mappings. Entries set to an empty string will be disabled.

Use g:wordmotion_nomap to disable all of the default mappings. You can create your own mappings to the <Plug>WordMotion_ internal mappings. Since there are multiple modes involved for many of the mappings, it's probably more convenient to use g:wordmotion_prefix or g:wordmotion_mappings.

Use g:wordmotion_spaces to designate extra space characters. g:wordmotion_spaces is a list where each item is a regular expression for a character that you want to treat as a space. You have to make sure the regex matches a single character. You can use lookaheads and lookbehinds for context-sensitive space characters.

By default, these are treated as spaces in addition to the actual space characters:

1. hyphens (-) between between alphabetic characters
2. underscores (_) between alphanumeric characters

Use g:wordmotion_uppercase_spaces to designate extra space characters for uppercase motions. These are separate from g:wordmotion_spaces. There are no extra space characters for uppercase motions by default.