Description
After updating from 2.9.4 to a newer version, we observed that we get invalid HTML. This is likely related to the change "HTML: remove space between attributes when after a quoted value" in 2.9.5.
Raw HTML
<meta property="og:locale" content="en_US" />
<meta property="og:site_name" content="InfoSec Handbook – information security blog" />
<meta property="og:type" content="website" />
<meta property="og:title" content="InfoSec Handbook – information security blog" />
<meta property="og:description" content="A non-profit information security blog, operated by a community of InfoSec professionals – no ads, no tracking, free and secure." />
<meta property="og:url" content="https://infosec-handbook.eu/" />
<meta property="og:image" content="https://infosec-handbook.eu/img/l128.pn" />
Expected result (prior to 2.9.5)
<meta property="og:locale" content="en_US"><meta property="og:site_name" content="InfoSec Handbook – information security blog"><meta property="og:type" content="website"><meta property="og:title" content="InfoSec Handbook – information security blog"><meta property="og:description" content="A non-profit information security blog, operated by a community of InfoSec professionals – no ads, no tracking, free and secure."><meta property="og:url" content="https://infosec-handbook.eu/"><meta property="og:image" content="https://infosec-handbook.eu/img/l128.png">
Actual result (2.9.5 and newer)
<meta property="og:locale"content="en_US"><meta property="og:site_name"content="InfoSec Handbook – information security blog"><meta property="og:type"content="website"><meta property="og:title"content="InfoSec Handbook – information security blog"><meta property="og:description"content="A non-profit information security blog, operated by a community of InfoSec professionals – no ads, no tracking, free and secure."><meta property="og:url"content="https://infosec-handbook.eu/"><meta property="og:image"content="https://infosec-handbook.eu/img/l128.png">
In this example, minify removes whitespaces between …" content…
, resulting in …"content…
.
Problem
The nu HTML checker and the developer mode of web browsers (e.g., Firefox) detect this as invalid HTML:
Error: No space between attributes.
At line 1, column 846
rty="og:locale"content="en_US"
There is no minify option to disable this new behavior, introduced in 2.9.5. --html-keep-whitespace
doesn't disable the behavior.
Workaround
Downgrade to minify 2.9.4.