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proc setup {} {
    save_env
}

proc teardown {} {
    assert_env_unmodified {
        /COMPREPLY=/d
    }
}


setup


set test "function should run without errors"
assert_bash_exec {_tilde > /dev/null} $test
sync_after_int

set test "function should not pollute environment"
# NOTE: A possible environment pollution is detected by assert_env_modified() in teardown()
assert_bash_exec {foo() { local aa="~"; _tilde "$aa"; }; foo; unset foo} $test
sync_after_int

set failed_find_unique_completion 0
assert_bash_exec {compgen -u} {} /@ users
if {![find_unique_completion_pair $users part full]} {
    set failed_find_unique_completion 1
}

set test "~full should complete to ~full unmodified"
if {$failed_find_unique_completion} {
    untested "Not running, no suitable test user found: $test"
} else {
    set cmd [format {_tilde "~%s"; printf "%%s\n" "${COMPREPLY[@]}"} $full]
    assert_bash_list "~$full" $cmd $test
    sync_after_int
}

set test "~part should complete to ~full"
if {$failed_find_unique_completion} {
    untested "Not running, no suitable test user found: $test"
} else {
    set cmd [format {_tilde "~%s"; printf "%%s\n" "${COMPREPLY[@]}"} $part]
    assert_bash_list "~$full" $cmd $test
    sync_after_int
}

# Debian #766163
assert_no_complete "_tilde ~-o"
sync_after_int


teardown