First line is blank

[thasmo]

Converting the following jade template with gulp-jade results in the HTML file having a blank, first line:

link(rel='import', href='../../polymer/polymer.html')

polymer-element(name='my-element', attributes='attribute')
    template
    script(src='my-element.js')

Not sure if this depends on the source file or if this is a general minor jade glitch, but it would be nice to get rid of the blank line.

Any ideas? Thanks!

[TimothyGu]

Unfortunately I do not think this is a bug in Jade. At least with Jade 1.9.2 it is not reproducible:

$ cat <<EOF | bin/jade.js 
link(rel='import', href='../../polymer/polymer.html')

polymer-element(name='my-element', attributes='attribute')
    template
    script(src='my-element.js')
EOF
<link rel="import" href="../../polymer/polymer.html"/><polymer-element name="my-element" attributes="attribute"><template></template><script src="my-element.js"></script></polymer-element>

[TimothyGu]

Scratch that.

[TimothyGu]

Hm WTF I can't reproduce it now.

[thasmo]

Hehe, I don't understand. ;) So, this may be more likely a gulp or gulp-jade bug?

[ForbesLindesay]

I'd be extremely surprised if this is a current jade bug. This is almost certainly a bug in gulp-jade. The other possibility is that you're using a very old version of jade, it used to be extremely buggy. If you can reproduce it by calling jade directly (or via the CLI), please comment and we will re-open.

[finico]

@ForbesLindesay @thasmo I can reproduce it

> jade --version
1.11.0
> echo ".some" > ./template.jade
> jade ./template.jade --pretty

  rendered template.html

> cat template.html

<div class="some"></div>
> sed -n '$=' ./template.html
2
>

the same result on mac os and ubuntu server

[TimothyGu]

Seems like this issue is related to pretty mode.

[TimothyGu]

Yes I can reproduce it now. The problem is pretty difficult to fix, since we always insert a new line before a block-level tag (if you try doctype html or span a they don't have an extra new line). We need to add a flag in the Compiler object in jade-code-gen for determining whether or not we should add the new line, but this won't be accurate as we have mixins etc.