Hello, there!
I am the original author of the typography extensions in Inkscape. Those were implemented roughly 4 years ago and used to work well. I tried using them again today and noticed that the positioning of the guidelines is wrong in the current development version of Inkscape.
The specific one I'm talking about is:
share/extensions/setup_typography_canvas.py
Looking at git blame (I am using git bzr) I have seen that tavmjong did modify the code some months ago (actually in October 2014) adding a declaration of document units being in pixels.
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commit 4c2c309889e6c7ad12ddd2479294ccc6f3564953
Author: tavmjong-free <
tavmjong@...8...>
Date: Thu Oct 9 11:25:39 2014 +0200
Add proper 'viewBox', set 'inkscape:document-units',
set maximum em-size to 2048 as is typical in TrueType.
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What I observe on the current misbehaviour is that the positioning of the guidelines is being done as if the units were given in millimeters...