gh-140627: Fix textwrap.wrap removing whitespace at start of paragraph

[StanFromIreland]

• Issue: Other consequences of textwrap.wrap() changes in 3.15 #140627

[ashm-dev]

Suggested change

	# If this is the first line keep it if a non-whitespace chunk follows
	if not lines and len(cur_line) == 1 and chunks and chunks[-1].strip() != '':
	pass
	else:
	cur_len -= len(cur_line[-1])
	del cur_line[-1]
	# Keep first non-whitespace chunk on the first line
	if not (not lines and len(cur_line) == 1 and chunks and chunks[-1].strip()):
	cur_len -= len(cur_line[-1])
	del cur_line[-1]

Maybe this is better?

[avylove]

Or

                if lines or len(cur_line) != 1 or not chunks or not chunks[-1].strip():
                    cur_len -= len(cur_line[-1])
                    del cur_line[-1]

[avylove]

Or

                if lines or len(cur_line) != 1 or not chunks or not chunks[-1].strip():
                    cur_len -= len(cur_line[-1])
                    del cur_line[-1]

[avylove]

Maybe add other cases

>>> textwrap.wrap('   ABCDEFG', width=1)
[' ', 'A', 'B', 'C', 'D', 'E', 'F', 'G']
>>> textwrap.wrap('   ABCDEFG', width=2)
[' A', 'BC', 'DE', 'FG']
>>> textwrap.wrap('   ABCDEFG', width=3)
['   ', 'ABC', 'DEF', 'G']

[serhiy-storchaka]

I do not think this is a bug. See discussion on the issue.