On Thu, Nov 24, 2022 at 09:58:04PM +0900, Yoichi Nakayama wrote: > > The original vim version used the notation \$1 instead of $1. > > I'm worried that the emacs version might need the backslash. > > What does the backslash mean? Is it necessary? > > I found the answer myself. The backslash is to leave the > evaluation of the argument to the 'eval' execution. > And another question arose. Why do we use eval? > What is the difference from running it directly like below? > $editor -q $1 The value of $editor is not a single program name, but is itself a shell command. So you could imagine: git config core.editor "some_command --with --args" or even more complicated shell hackery. From within Git, we'd run it as: sh -c "some_command --with --args" but when you are in a shell already, "eval" is a more efficient way of doing the same. -Peff
