Cant read styles with "em" units from svg files

[John Smith]

In function sp_repr_css_merge_from_decl (src/xml/repr-css.cpp)

Attempt to read "font-size:2.1em" fails, whereas "font-size:2.1cm" works ok.
Possibly to do with the "e" being interpreted as part of a number.

[su_v (suv-lp)]

Possibly related (missing support for 'em' unit):
Bug #168858 (sf1784817) “font size specified in em too big”
Bug #168845 (sf1780464) “<text> position attributes should handle relative units”

[John Smith (john-smithi)]

Fix committed r11605.
Any style with "e" after a number is being treated as scientific "e" notation and failing to write the correct style. Workaround fix is to check for "em" and "ex" units and process properly.