maps the keystrokes ;tf (this function) to the range of the function in which the cursor is currently located. It works by searching backwards for a { occurring in the first column, and then for a ( to find the start of the function. A } in the first column ends the function body. For example, suppose you want to change the name of a function argument in the current function from i to ii: int foo(int i, int j) { // ... i++; return i; } In normal mode, type :;tf followed by the subsitution command s/\ /ii/g \>. The command line now reads: :?^{??(?,/^}/s/\/ii/g This tip assumes that: