- When computing the center line, 'exit' on failure instead of 'return'.
- Open vim in read-only mode to avoid a non-zero exit code if the file is
already opened.
Signed-off-by: Nicolas VINCENT <nico.vince@gmail.com>
The `tagpreview.sh` script is hardcoded to the `vim` binary. For users that only
have Neovim installed an error is displayed and no preview is rendered.
This change addresses this by falling back to the `nvim` binary if the `vim`
binary isn't present.
