Converting text to Title case in Notepad++

The TextFX plugin has this feature, they call it "Proper Case". You can find it under TextFX -> TextFX Characters -> Proper Case:

You can use replace text by regular expression:

Explanation:

Search text

• \< matches the beginning of a word
• (\w+) matches any sucession of word letters

Substituted by

• \L translates everything to lowercase until the end of the replacement string
• \u translates the next letter to uppercase

• \1 places the first captured () search group

  1:

As the way has changed in the meantime here is how it works now (without TextFX):

Select the case you want to convert, press Alt-U or choose

Edit - Convert Case to - Title Case.