Function collapse_spaces

pattern/web/__init__.py:848–857

Returns a string with consecutive spaces collapsed to a single space. Whitespace on empty lines and at the end of each line is removed. With indentation=True, retains leading whitespace on each line.

(string, indentation=False, replace=" ")

RE_TABS   = re.compile(r"\t+", re.M)      # Matches one or more tabs.

def collapse_spaces(string, indentation=False, replace=" "):
    """ Returns a string with consecutive spaces collapsed to a single space.
        Whitespace on empty lines and at the end of each line is removed.
        With indentation=True, retains leading whitespace on each line.
    """
    p = []
    for x in string.splitlines():
        n = indentation and len(x) - len(x.lstrip()) or 0
        p.append(x[:n] + RE_SPACES.sub(replace, x[n:]).strip())
    return "\n".join(p)

def collapse_tabs(string, indentation=False, replace=" "):
    """ Returns a string with (consecutive) tabs replaced by a single space.