vim regex guide

README.md

• Half the even numbered spaces :% s/\(\( \)\{\-2\}\)/\2/g by matching the the consecutive 4 spaces, source
  • origin: s/(( ){-2}/$2/g
• Half the even numbered spaces :% s/\^\(\( \)\+\)\\1/\1/g by matching the whole spaces and halving them, source
  • origin: s/^(( )+)\1/$1/g
• Encapsulate all the small caps strings into double quotes: :% s/\([a-z]\+\)/"\1"/g
  • origin: s /([a-z]+)/"$1"/g
• Replace [:abc] with "abc": :% s/\[:\([a-z]\+\)\]/"\1"/g
  • origin: s /[:([a-z]+)]/$1/g or s /\[:([a-z]+)\]/$1/g I have to double check
• Replace Model.enum[:abc].to_s with "abc": :% s/Model\.[a-z]\+\[:\([a-z]\+\)\]\.to_s/"\1"/g
  • origin: s /Model\.[a-z]+[:([a-z]+)]\.to_s/$1/g or s /Model\.[a-z]+\[:([a-z]+)\]\.to_s/$1/g I have to double check
• Remove trailing spaces: :% s/\s\+$//g
  • origin s/\s+$//g
  • NOTE: to keep tabs and other whitespace chars, use :% s/[ ]\+$//g

Notes:

• The variable grouping takes place through an escaped ()
• However letter bags take place through non-escaped []
• Using escaped \[\] will match the brackets exactly