test filename-4.12 {Tcl_SplitPath: unix} {testsetplatform} {
    testsetplatform unix
    file split ../..
} {.. ..}
test filename-4.13 {Tcl_SplitPath: unix} {testsetplatform} {
    testsetplatform unix
    file split //foo
} "[file split //] foo"
test filename-4.14 {Tcl_SplitPath: unix} {testsetplatform} {
    testsetplatform unix
    file split foo//bar
} {foo bar}
test filename-4.15 {Tcl_SplitPath: unix} {testsetplatform} {
    testsetplatform unix
    file split ~foo

test filename-7.16 {Tcl_JoinPath: unix} {testsetplatform} {
    testsetplatform unix
    file join a . ./~b
} {a/./~b}
test filename-7.17 {Tcl_JoinPath: unix} {testsetplatform} {
    testsetplatform unix
    file join //a b
} "[file split //]a/b"
test filename-7.18 {Tcl_JoinPath: unix} {testsetplatform} {
    testsetplatform unix
    file join /// a b
} "[file split //]a/b"


test filename-9.1 {Tcl_JoinPath: win} {testsetplatform} {
    testsetplatform win
    file join a b
} {a/b}
test filename-9.2 {Tcl_JoinPath: win} {testsetplatform} {