Make loop unrolling completely whitespace-insensitive

[yushijinhun]

This is just another #19726. Since #20012 is accepted, I think it's okay to make loop unrolling completely whitespace-insensitive.

[Mugen87]

TBH, I'm not a fan of salami tactics. My opinion still stands:

#19726 (comment)

[mrdoob]

I'm undecided...
@yushijinhun how does your code look like?

[yushijinhun]

I'm undecided...
@yushijinhun how does your code look like?

I'm removing all unnecessary whitespaces from GLSL code to reduce bundle size.
So I hope the following style can be accepted:

#pragma unroll_loop_start
for(int i=0;i<5;i++){k+=m[i];}
#pragma unroll_loop_end

[mrdoob]

Seems like there is no need to add \s+ to #pragmas?

[yushijinhun]

Seems like there is no need to add \s+ to #pragmas?

Not quite necessary. I have removed them.

[mrdoob]

Thanks!