On 2021-02-27, Kornel Benko wrote:
> I don't understand the two entries there
> 0x2217 "\\textasteriskcentered" "textcomp" "force!=utf8x,deprecated"
> "\\ast" "" #
> ASTERISK OPERATOR
> ...
> 0x204e "\\textasteriskcentered" "textcomp" "force=utf8x" "\\ast" "" # LOW
> ASTERISK
> In both cases the same entry but different unicode. Because of
> 'deprecated' is only '0x204e' valid?
For both Unicode points, \textasteriskcentered is the best matching LaTeX
macro.
OTOH, for LaTeX to Unicode, 0.204e LOW ASTERISK is the better match. The
"deprecated" tag overrides the default behaviour to take the first match (in
ascending Unicode point number order).
Cf. the similar case for
0x212b "\\AA" "" "force=utf8,deprecated" "" "" # ANGSTROM SIGN
0x00c5 "\\AA" "" "mathalpha" "\\mathring{A}" "" # LATIN CAPITAL LETTER A WITH
RING ABOVE
Here, the Unicode standard explicitely states:
212B ANGSTROM SIGN
* non SI length unit (=0.1 nm) named after A. J. Ångström, Swedish
physicist
* preferred representation is 00C5
Unicode preferences do not necessarily lead to a "deprecated" tag when there
are different matches with different requirements on the LaTeX side, e.g.
2126 OHM SIGN
* SI unit of resistance, named after G. S. Ohm, German physicist
* preferred representation is 03A9
but
0x03a9 "\\textgreek{\\textOmega}" "textgreek" "" "\\Omega" "" # GREEK CAPITAL
LETTER OMEGA
0x2126 "\\textohm" "textcomp|textgreek" "" # OHM SIGN
For documents that do not need other Greek text characters, textcomp
provides usually better matching Greek characters for µ and Ω and less
overhead that the Greek LaTeX text fonts.
Günter
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