Yelp does not correctly display HTML formatted files
In earlier versions of `yelp`, HTML formatted files could be displayed. With version 3.22, this functionality no longer works, returning an "Unknown Error" with the qualifying text "URL cannot be shown".
There is no workaround at this time, as the problem may be related to architectural changes in `yelp` itself.
System administrators should note that `yelp` does not support this use case and expects Mallard or Docbook data as input.
Alternative methods for displaying HTML formatted content should be considered.
Created attachment 1272388 [details]
yelp showing error message after an attempt to load a html file
Description of problem:
Looks like the yelp help viewer can't open html files when called from command line with path to the file, eq.:
Both relative and absolute paths return the same error. The same thing happens also for plain-text and asciidoc files. DocBook files are loaded and shown correctly.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. wget www.example.com
2. yelp index.html
Yelp reports an error:
"Unknown Error" & "URL cannot be shown" (As can be seen on the attached screenshot).
The HTML content is shown correctly.
I think this used to work in the 7.0 or 7.1 timeframe, as there are HTML placeholders in the Anaconda help system, which yelp used to be able to display, but can no longer do so.
This is probably fallout from the WebKit2 port of Yelp, and is likely related to URI handling. There is currently no upstream fix, and any fix would probably not be trivial.