The :substitute command uses / as its delimiter by default, but it doesn't have to. You can use any
single-byte character that isn't alphanumeric,
/, ", or |.
This becomes painfully obvious when renaming paths. Using / as the delimiter forces you to escape every slash in the pattern and
replacement:
:%s/src\/components\/Button/src\/ui\/Button/g
Swap the delimiter to , and the same command becomes
immediately readable:
:%s,src/components/Button,src/ui/Button,g
The same applies to :global and :vglobal you can replace the / surrounding the pattern
with any character there too. See :help pattern-delimiter for the details.