Style-RedundantLineContinuation.md

Pattern: Redundant line continuation

Issue: -

Description

This rule marks a line continuation as redundant if removing the backslash does not result in a syntax error.

However, a backslash at the end of a comment or for string concatenation is not redundant and is not considered an offense.

Examples

# bad
foo. \
  bar
foo \
  &.bar \
    .baz

# good
foo.
  bar
foo
  &.bar
    .baz

# bad
[foo, \
  bar]
{foo: \
  bar}

# good
[foo,
  bar]
{foo:
  bar}

# bad
foo(bar, \
  baz)

# good
foo(bar,
  baz)

# also good - backslash in string concatenation is not redundant
foo('bar' \
  'baz')

# also good - backslash at the end of a comment is not redundant
foo(bar, # \
  baz)

# also good - backslash at the line following the newline begins with a + or -,
# it is not redundant
1 \
  + 2 \
    - 3

# also good - backslash with newline between the method name and its arguments,
# it is not redundant.
some_method \
  (argument)

Further Reading

• RuboCop - Style/RedundantLineContinuation