texmath-0.13.2: test/writer/starmath/032_mathrm_text_in_subscripts_stays_quoted.test
<<< tex
n_{\mathrm{Fe,metal}} = n_{\mathrm{Fe_bcc}} + n_{\mathrm{Fe_fcc}}
>>> starmath
n_"Fe,metal" = n_{nitalic{Fe_b cc}} + n_{nitalic{Fe_f cc}}
<<< tex
n_{\mathrm{Fe,metal}} = n_{\mathrm{Fe_bcc}} + n_{\mathrm{Fe_fcc}}
>>> starmath
n_"Fe,metal" = n_{nitalic{Fe_b cc}} + n_{nitalic{Fe_f cc}}