+\end{tcblisting}
+
+\paragraph{\texttt{+ss06} OpenType feature} It is commonly believed
+that all Greek vowels with acute accent taken from the Greek Extended
+Unicode block \verb|1F00–1FFF| along with standalone acute accents
+were duplicated from the Greek and Coptic Unicode block. Affected
+characters from the Greek Extended Unicode block (\verb|0370–03FF|)
+follow: \textgrc{ά, έ, ή, ί, ό, ύ, ώ, Ά, Έ, Ή, Ί, Ό, Ύ, Ώ, ΐ, ΰ, ´,
+ ΅}. The counterparts of these letters in the Greek and Coptic
+Unicode block are vowels with \emph{tonoi}.
+
+However, strictly speaking, \emph{tonos} is not to be mistaken for
+\enquote*{acute}: that is for sure, as \emph{tonos} was introduced as
+a result of a reform to denote a tone, namely a stress on some vowels,
+and not a pitch, namely a rising and falling voice on accented vowels.
+Confusion began when the Greek government decreed that \emph{tonos}
+shall be the acute. From what the writer could see, many Greek fonts
+originally reflected the distinction between \emph{tonos} and acute.
+But nowadays, they simply mix them up. As a result of this confusion,
+in \emph{Old Standard}, vowels with acute were simply missing from the
+Greek Extended Block. All of them, including the standalone accents,
+have been restored in \emph{Old Standard T}. Furthermore, the rule
+that instructed to absorb vowels with acute into vowels with
+\emph{tonos} has been removed.
+
+Since assigning vowels with \emph{tonos} and vowels with acute to the
+same code points is clearly unacceptable even if the glyphs are
+identical, it is now possible in \emph{Old Standard T} to input all
+accented vowels from the Greek Extended Unicode block exclusively and
+have the substitution rules applied at the same time, as shown by the
+example that follows:---
+\begin{tcblisting}{minted language=latex, minted
+ options={fontsize=\smaller, linenos, numbersep=0mm,
+ highlightlines={9-10}}}
Lady’s Gitweb / OldStandard / commitdiff