Style din-1505-2-alphanumeric.csl produces disambiguous cite labels

[Firegate1075]

According to csl spec version 1.0.2 the year-suffix is only automatically appended to the first occurence of cs:date in cite and the bibliography entry:

By default, the year-suffix is appended the first year rendered through cs:date in the cite and in the bibliographic entry, but its location can be controlled by explicitly rendering the “year-suffix” variable using cs:text.

In din-1505-2-alphanumeric.csl, the year-suffix-disambiguation is enabled, but the "year-suffix" variable is not accessed in the citation.
Accordingly, two entrys by the same author in the same year will produce the same citation, since the only accessed variable is "cite-label" through cs:text.

If the intended behaviour for this style is the citations [Doe07a], [Doe07b], then the style file needs to explicitly render <text variable="year-suffix>.
The same citation label should be rendered in the bibliography entry. This requires, as far as I can tell, the use of "left-margin" and "right-inline" over "second-field-align", since multiple fields (cite-label and year-suffix) are required for the citation label.

I have modified the file to produce citations that are disambiguated by explicitly rendered year-suffix and are consistent between citation and bibliography entry: Firegate1075/csl-styles@8e4e56a