EmacsGolf 4 didn’t generate a lot of interest, apparently. What little discussion there was centered on why you would want to perform the given transformations rather than how to do so. Nevertheless, the honor of Emacs users everywhere is at stake here so I offer the following solution using multiple-cursors.
| 【Ctrl+n Ctrl+n Ctrl+f】 | move to first defvar |
| 【Ctrl+*】 | invoke multiple cursors on defvar |
| 【Ctrl+e】 | move to end of line |
| 【Ctrl+BackSpace Ctrl+BackSpace】 | kill variable name |
| 【Ctrl+y】 | yank it back |
| SPC n i l | add nil |
| 【Ctrl+n Ctrl+a】 | beginning of second line |
| 【Meta+(】 | wrap list in parens |
| s e t q SPC | add setq |
| 【Ctrl+y】 | add variable name |
| 【Ctrl+d】 | delete extra space |
| 【Ctrl+n】 | down to third line |
| 【Ctrl+x Ctrl+t】 | interchange second and third lines |
| 【Ctrl+p Ctrl+p】 | up to second line |
| 【Meta+^】 | join with first |
| 【Return】 | exit multiple cursors |
That 29 keystrokes. If you’re not using multiple-cursors (why not?!) you could use almost the same keystrokes with a macro. Substitute 【F3】 for 【Ctrl+*】 and 【Ctrl+3 Ctrl+n F4】 for 【Return】. Then use 【Meta+0 F4】 to run the macro on the rest of the buffer.
Surely the Irreal heavy hitters can do better than my 29. If you can, leave a comment. It’s not too late.