Zim-desktop-wiki: Cannot add custom RFC822 headers and Creation-Date goes missing

[lofidevops]

User story: I am a project maintainer. I need to add my own non-visible metadata to Zim wiki files, for example a "SPDX-License-Identifier" value.

Steps to reproduce:

• Open a Zim text file project.txt in a text editor
• Add custom RFC822 header as follows:

Content-Type: text/x-zim-wiki
Wiki-Format: zim 0.4
SPDX-License-Identifier: CC-BY-SA-4.0

====== Project ======
Wiki page starts here.

• Save text file
• Open notebook in Zim
• Modify "Project" page in Zim
• Save page/notebook
• Open text file in a text editor

What should happen:

• Custom RFC822 header persists.

What happens instead:

• Custom RFC822 header is lost.

Notes:

• Running Zim 0.66 from PPA on Ubuntu 17.04
• Is there another way to add custom non-visible metadata to a wiki file?
• Is this just another symptom of #3 ?

[jaap-karssenberg]

In case #3 all headers disappear

Afraid I have not specifically tested for custom headers but will do so

[jaap-karssenberg]

I believe this may be a side effect of 8d217a5a7117944b3aee7289adb1af5a806c2a9d

[jaap-karssenberg]

Re-opening: although the format headers are preserved now (see issue #3), the Creation-Date header goes missing as well as custom headers.

[jaap-karssenberg]

Looks like a stupid mistake in the test case. Tested that re-using the same parse-tree these headers are preserved. However if page is edited a new parse-tree is set, which will not have these headers. So need to preserve them in the page object rather than in the parse-tree object.