Vim Text Objects http://blog.carbonfive.com/2011/10/17/vim-text-objects-the-definitive-guide/

text_objects.md

Word

• aw – a word (includes surrounding white space)
• iw – inner word (does not include surrounding white space)

Sentences

• as - a sentence
• is - inner sentence

Paragraphs

• ap – a paragraph
• ip – inner paragraph

Strings

• a” – a double quoted string
• i” – inner double quoted string
• a’ – a single quoted string
• i’ – inner single quoted string
• `a`` – a back quoted string
• `i`` – inner back quoted string

Parentheses

• a) – a parenthesized block
• i) – inner parenthesized block

Brackets and braces

• a] – a bracketed block
• i] – inner bracketed block
• a} – a brace block
• i} – inner brace block

Markup Language Tags

• at – a tag block
• it – inner tag block

Ruby blocks (via https://github.com/nelstrom/vim-textobj-rubyblock)

• ar – a Ruby block
• ir – inner Ruby block