False positives on img with new lines on src value

[cetinajero]

Hi Garen,

I came across an issue when an img tag has this structure:

<img src="
https://grupopv-public.s3.amazonaws.com/assets/img/catalog/thumbnails/radios/motorola/licenses/smart-ptt/spttc0003.png
" class="img-center" alt="SPTTC0003" />

As you can see there are new lines at the start and end of the src value, and if you see closely there are even some spaces too, this is a common scenario when using Liquid variables, tags & filters.

Edgars-MacBook-Pro:spttc0003 cetinajero$ cat index.html | od -c
0000000                                            <   i   m   g       s
0000020    r   c   =   "  \n                                           h
0000040    t   t   p   s   :   /   /   g   r   u   p   o   p   v   -   p
0000060    u   b   l   i   c   .   s   3   .   a   m   a   z   o   n   a
0000100    w   s   .   c   o   m   /   a   s   s   e   t   s   /   i   m
0000120    g   /   c   a   t   a   l   o   g   /   t   h   u   m   b   n
0000140    a   i   l   s   /   r   a   d   i   o   s   /   m   o   t   o
0000160    r   o   l   a   /   l   i   c   e   n   s   e   s   /   s   m
0000200    a   r   t   -   p   t   t   /   s   p   t   t   c   0   0   0
0000220    3   .   p   n   g  \n                                   "    
0000240    c   l   a   s   s   =   "   i   m   g   -   c   e   n   t   e
0000260    r   "       a   l   t   =   "   S   P   T   T   C   0   0   0
0000300    3   "       /   >  \n                                        
0000306

When html-proofer test a node like this it fails in reporting errors and because of this, my CI tests are reporting false positives.

[gjtorikian]

Closed via c8d8b9b#diff-42adaf791dc0552cebbfe8060b2fe714R57