Text drawing regressions

[mbway]

ezdxf v0.16 rendered text more accurately in many cases, although v0.17.2 does handle multiple column placement better.
I checked out the two versions of ezdxf and ran:

cd examples_dxf
ezdxf draw text.dxf

Here are the results:
v0.16

v0.17.2

For comparison, here is what the file looks like in autocad:

differences highlighted. Question marks indicate places where the difference may not be necessarily worse

[mbway]

I found that the 'Standard style' is supposed to be bold, so the headings on the right and the 'Standard Style' text now being bold is correct. Also replacing draw_complex_mtext with draw_simple_mtext is more accurate in a lot of cases but doesn't support caret encoding
v0.17.2 with draw_simple_mtext

[mozman]

Many issues are caused by text wrapping. Matplotlib does text rendering different than AutoCAD or BricsCAD. The yellow outlines show the Matplotlib rendering and the white text is rendered by TrueView (AutoCAD):

The MTEXT entity does not store the text wrap locations, only the column width. By using Matplotlib to calculate the text width, the text wrapping will never be exact the same as in AutoCAD or BricsCAD.

[mozman]

These are all very special cases of line wrapping or handling of "space" characters in context of line-wrapping.

I won't fix anything of that. Time is too precious to waste it for rare edge cases.

[mbway]

so long as accurate placement is still available by creating a custom frontend and overriding draw_complex_mtext I'm happy. I find accurate placement and one Text entity per line much more important than accurate styling.