Pattern: Use of leading space for multi-lines
Issue: -
Checks that strings broken over multiple lines (by a backslash) contain trailing spaces instead of leading spaces.
# bad
'this text contains a lot of' \
' spaces'
# good
'this text contains a lot of ' \
'spaces'
# bad
'this text is too' \
' long'
# good
'this text is too ' \
'long'