Implement method `CppStringT::splitlines()`

[schmouk]

"

str.splitlines(keepends=False)

Return a list of the lines in the string, breaking at line boundaries. Line breaks are not included in the resulting list unless keepends is given and true.

This method splits on the following line boundaries. In particular, the boundaries are a superset of universal newlines.

Representation	Description
\n	Line Feed
\r	Carriage Return
\r\n	Carriage Return + Line Feed
\v or \x0b	Line Tabulation
\f or \x0c	Form Feed
\x1c	File Separator
\x1d	Group Separator
\x1e	Record Separator
\x85	Next Line (C1 Control Code)
\u2028	Line Separator
\u2029	Paragraph Separator

Changed in version 3.2: \v and \f added to list of line boundaries.

For example:

>>>

'ab c\n\nde fg\rkl\r\n'.splitlines()
['ab c', '', 'de fg', 'kl']

'ab c\n\nde fg\rkl\r\n'.splitlines(keepends=True)
['ab c\n', '\n', 'de fg\r', 'kl\r\n']

Unlike split() when a delimiter string sep is given, this method returns an empty list for the empty string, and a terminal line break does not result in an extra line:

>>>

"".splitlines()
[]

"One line\n".splitlines()
['One line']

For comparison, split('\n') gives:

>>>

''.split('\n')
['']

'Two lines\n'.split('\n')
['Two lines', '']

str.splitlines(keepends=False)

Return a list of the lines in the string, breaking at line boundaries. Line breaks are not included in the resulting list unless keepends is given and true.

This method splits on the following line boundaries. In particular, the boundaries are a superset of [universal newlines](https://docs.python.org/3/glossary.html#term-universal-newlines).

Representation
	

Description

\n
	

Line Feed

\r
	

Carriage Return

\r\n
	

Carriage Return + Line Feed

\v or \x0b
	

Line Tabulation

\f or \x0c
	

Form Feed

\x1c
	

File Separator

\x1d
	

Group Separator

\x1e
	

Record Separator

\x85
	

Next Line (C1 Control Code)

\u2028
	

Line Separator

\u2029
	

Paragraph Separator

Changed in version 3.2: \v and \f added to list of line boundaries.

For example:
>>>

'ab c\n\nde fg\rkl\r\n'.splitlines()
['ab c', '', 'de fg', 'kl']

'ab c\n\nde fg\rkl\r\n'.splitlines(keepends=True)
['ab c\n', '\n', 'de fg\r', 'kl\r\n']

Unlike split() when a delimiter string sep is given, this method returns an empty list for the empty string, and a terminal line break does not result in an extra line:

"".splitlines()
[]

"One line\n".splitlines()
['One line']

For comparison, split('\n') gives:

''.split('\n')
['']

'Two lines\n'.split('\n')
['Two lines', '']"

[schmouk]

Completed.