Commenting multi-line code may lead to unnecessary warning

[njourdane]

Godot version:

3.1.1 stable

OS/device including version:

Kubuntu

Issue description:

Commenting multi-line code may lead to unnecessary warning.

Steps to reproduce:

Type some code with multil-ine code:

func new_issue():
    if 'Roses' == 'blue' \
    and 'Violets' == 'blue' \
    and 'Sugar' == 'sweet':
        print('And so are you.')

Then comment some line(s) inside:

func new_issue():
    if 'Roses' == 'blue' \
#    and 'Violets' == 'blue' \
    and 'Sugar' == 'sweet':
        print('And so are you.')

As you can see, this produces a red warning, even if the code without this line is syntactically correct.

[Calinou]

Using parentheses to wrap a statement over multiple lines should avoid this issue, while generally being easier to refactor:

func new_issue():
    if (
        'Roses' == 'blue'
#        and 'Violets' == 'blue'
        and 'Sugar' == 'sweet'
    ):
        print('And so are you.')

It'd still be good to fix this issue if possible.

[name-here]

Fixing it would also allow you to avoid the frown at the end of your if statement.

[fsy98]

Actually, this problem is because colon missing at the end of if - or func-line, so the next line will confused and show the mistake in the degugger. For C and C++ the syntax you give is ok, but for godot make some problem like python.

[ThakeeNathees]

it's not a bug, its an expected behavior the symbol "\" means just ignore the next new line character

in python

if True and True\
## comment
    or False:
    print("test")

## output error
 File "test.py", line 3
    ## comment
            ^
SyntaxError: invalid syntax

in c++

#define TEST                       \
	if (true){                   \
		// comment
		print_line("test");   \
	}
// this is also an invalid define macro

and also having even an extra white space after the "\" character is invalid
if you write something like this

if 'Roses' == 'blue' \
#    and 'Violets' == 'blue' \
    and 'Sugar' == 'sweet':
        print('And so are you.')

the gdscript tokenizer sees it like this

if 'Roses' == 'blue' #    and 'Violets' == 'blue'      and 'Sugar' == 'sweet':
        print('And so are you.')

[KoBeWi]

Closing as per above comment.