From the vim-as-language article:

Vim’s "verbs" mostly fall into 2 main categories. Some of them act on a single character, and others act on a "motion" or "text object".

And from the vim wiki for switching the case of characters:

Toggle case "HellO" to "hELLo" with g~ then a movement.
Uppercase "HellO" to "HELLO" with gU then a movement.
Lowercase "HellO" to "hello" with gu then a movement.

In this case, it seems like Lowercase is the action. Would "the current line" be considered a movement or text object?

For example given the line (with my cursor at the |):

pgp - Pretty Good Privac|y

I'm wondering use the action-movement pattern to "downcase the current line" works in this case. I used gu0 which worked.

But what if the cursor is in the middle of the line like:

pgp - Pretty Go|od Privacy

Then, gu0 followed by gu$ will work, but it seems "the current line" should be a text-object. I also used guk or guk which works but I'm not sure if I'm thinking about the pattern the right way.

1 Answer 1


You can use gugu or guu for making current line lowercase. There's no a text object for current line

You can also use guip or guis which stand for paragraph and for sentence text objects

  • why does gugu and guu work?
    – mbigras
    Mar 16, 2017 at 22:38
  • 3
    Repeating the command to make it act on the entire current line is a common idiom in vim. yy, dd, etc. all work this way. Mar 16, 2017 at 23:06

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