def ssam(expr, string, echo_input=True):
selections = ""
if expr:
string, selections = call(parse(expr), string)
if selections:
print("".join(map(str, selections)), end="")
if echo_input:
print(string, end="")
def test_extract():
assert ("x", "regexp", None) == se.parse("x/regexp/")
assert ("x", "string", None) == se.parse("x/string/")
def test_empty_expression():
assert None == se.parse("")
def test_escaped_backslash():
assert ("x", r"\/", None) == se.parse(r"x/\//")
def test_extract_lines_and_print_if():
assert ("x", r".*\n", ("g", "string",
"p")) == se.parse(r"x/.*\n/ g/string/p")
def test_extract_and_delete():
assert ("x", "regexp", "d") == se.parse("x/regexp/d")