[SOLVED] How to use Regex to convert initial letter of a string to upper case

How to use Regex to convert initial letter of a string to upper case

Given a bunch of strings in an editor (e.g., Rubymine or IntelliJ) that look like this:

list: ["required","TBD at time of entry", "respirator, gloves, coveralls, etc."]

How can I use the built-in Regex search and replace to convert the initial letter to upper case?

To this:

list: ["Required","TBD at time of entry", "Respirator, gloves, coveralls, etc."]

NOTE WELL: The "TBD" should remain as "TBD" and not "Tbd"

Solution

You may match any lowercase letter that is preceded with a ":

Search: (?<=")\p{Ll}
Replace: \U$0

See the regex demo. Check Match Case to ensure matching only lower case letters.

Details

(?<=") - a positive lookbehind that ensure that the preceding char is a "
\p{Ll} - any Unicode lowercase letter.

Note that \U - uppercase conversion operator - does not require the trailing \E if you needn't restrict its scope and $0 backreference refers to the whole match value, no need to wrap the whole pattern with a capturing group.