[luikore]

Seems you are not very familiar with TextMate.

For TextMate, cmd+E, cmd+F then the selection is in the search box. Or, you don't even have to open the search box with cmd+F, just cmd+G to next selection or cmd+opt+F to multi-cursor edit all occurrences.

The regex in TextMate is also very powerful (the unicode support is more powerful). New lines can be matched with \n. Another way is to select new line and repeat the cmd+E trick.

TextMate column selection is even better: you can enter column select mode simply by pressing opt. It is in fact multi-cursor editing, many editing commands like completion / copy / paste can work for each row individually.

Cmd+N or ctrl+cmd+N in TextMate.

The last one, not in TextMate. Though cmd+E then cmd+opt+F can highlight and start multi-edit on all instances of the word.