does not work on python3

[birnstiel]

Latest macOS comes with python3 by default but the scripts are python2 only. Needs updating of all the python scripts and the script filter.

[yifengwan]

Two workarounds:

1. install python 2 and download the workflow version here
2. You can use a simple shell command in terminal or via alfred:

# open the first doc under package geometry
texdoc geometry
# or first list all files and then select one
texdoc -l geometry

[egeerardyn]

At the moment I do not have a working Mac to test anything on; but from inspection of texdoc.py, that should already be Python 3 compatible. The workflow package that gets embedded, I did not check in detail, but will probably exist as a Python 3 compatible version (if it is not compatible already).

Changing the code for that will not be difficult, I estimate 30 minutes work (probably even less), but obviously requires a working Mac to test everything.

Enabling Python 2 again is a bad idea, in a similar amount of time it is better to test this on Python 3.

[kiryph]

As much as I would like to not install Python 2, but as long as there is no Python 3 release of https://github.com/deanishe/alfred-workflow (e.g. see efforts in this PR deanishe/alfred-workflow#184), the texdoc workflow will probably require Python 2 for a while as well.

In the meanwhile you can do following:

1. Install Python 2 as described here: https://www.alfredapp.com/help/kb/install-dependencies/
2. Use modified texdoc workflow from here: https://github.com/alfredapp/updated-third-party-python2-workflows