kak:tldr:39971

This command is written in Vimscript, which is the scripting language used in the Vim text editor.

Here's a breakdown of each component:

• %s: This is the command in Vim to search and replace in the current buffer (file).
• ${foo}: This is a placeholder that represents the value of a variable named foo.
• <Enter>: This is a special key that represents pressing the Enter/Return key.
• c: This is an abbreviation for "confirm", which means the command will prompt for confirmation before making each replacement.
• ${bar}: Similar to ${foo}, this is another placeholder representing the value of a variable named bar.
• <Escape>: This is a special key that represents pressing the Escape key.

Overall, the command can be understood as a Vim search and replace operation, where ${foo} represents the search pattern, ${bar} represents the replacement pattern, and the command is set to prompt for confirmation before making each replacement. The <Enter> key is used to perform the search, <Escape> is used to exit any input modes, and the command is intended to be executed in the command-line mode of Vim.