[gaving]

Pretty cool with the editor interaction.

Also worth bearing in mind most shells can do this sort of thing easily enough too.

The example from your video with zsh's zmv (bundled: https://github.com/zsh-users/zsh/blob/master/Functions/Misc/... )

  > touch btn_google_{signin,signup}_dark_normal_web{,@2x}.png # create files
  > ls -l
  .rw-r--r-- 0 gaving 31 Dec 10:34 btn_google_signin_dark_normal_web.png
  .rw-r--r-- 0 gaving 31 Dec 10:34 [e-mail]
  .rw-r--r-- 0 gaving 31 Dec 10:34 btn_google_signup_dark_normal_web.png
  .rw-r--r-- 0 gaving 31 Dec 10:34 [e-mail]

  > zmv -n -W btn_*_sign*_dark_normal_web* *_sign_** # dry run
  mv -- btn_google_signin_dark_normal_web.png google_sign_in.png
  mv -- [e-mail] [e-mail]
  mv -- btn_google_signup_dark_normal_web.png google_sign_up.png
  mv -- [e-mail] [e-mail]

  > zmv -W btn_*_sign*_dark_normal_web* *_sign_** # change files
  > ls -l
  .rw-r--r-- 0 gaving 31 Dec 10:34 google_sign_in.png
  .rw-r--r-- 0 gaving 31 Dec 10:34 [e-mail]
  .rw-r--r-- 0 gaving 31 Dec 10:34 google_sign_up.png
  .rw-r--r-- 0 gaving 31 Dec 10:34 [e-mail]