Regex replace uppercase with lowercase letters

Question

I\'m trying to replace uppercase letters with corresponding lowercase letters using regex. So that

EarTH:   1,
MerCury: 0.2408467,
venuS:   0.61519726,
         


        

Answer 1

I figured this might come in handy for others as well :

find:

• ([A-Z])(.*)

replace:

• \L$1$2 --> will convert all letters in $1 and $2 to lowercase
  BUT
• \l$1$2 --> will only convert the first letter of $1 to lowercase and leave everything else as is

The same goes for uppercase with \U and \u