=. Bad line break?my_variable
=valuemyvariable=valueShellCheck found a command name starting with a =. This
was likely not meant as a new command, but instead a continuation from a
previous line.
Make sure the = is used correctly.
None, though you can quote the value to make ShellCheck ignore it,
e.g. "=foo".
ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.