backslash in string "&1" (not Unix-compatible)

Rule "backslash" gives this warning when it finds a string that contains a backslash, but ignores backslashes if they are preceeded by a tilde.

the risc:

String will behave strange on Unix, because backslash is an escape-character on Unix.

how to solve this:

Escape the backslash with a tilde, or replace the backslash by a forwardslash.

backslash in filename "&1" (not Unix-compatible)

Rule "backslash" gives this warning when it finds a filename that contains a backslash.

the risc:

Filename will not be valid on Unix.

how to solve this:

Replace the backslash by a forwardslash.