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-rw-r--r--language/greek/greek-fontenc/greek-fontenc.def17
1 files changed, 12 insertions, 5 deletions
diff --git a/language/greek/greek-fontenc/greek-fontenc.def b/language/greek/greek-fontenc/greek-fontenc.def
index 1e5d781b49..0ebda57015 100644
--- a/language/greek/greek-fontenc/greek-fontenc.def
+++ b/language/greek/greek-fontenc/greek-fontenc.def
@@ -248,15 +248,14 @@
% .. _uclclist:
%
-% UPPERCASE
-% ~~~~~~~~~
+% Case changing
+% ~~~~~~~~~~~~~
%
% UPPERCASE (all-caps) is generated with ``\MakeUppercase``. The
% implementation of this command changed in June 2022 [ltnews35]_.
%
-% According to Greek typographical tradition, diacritics (except dialytika,
-% iota subscript, macron, and breve) are placed before capital letters in
-% Titlecase and dropped in UPPERCASE.
+% According to Greek typographical tradition, diacritics (except dialytika)
+% are placed before capital letters in Titlecase and dropped in UPPERCASE.
%
% Different conventions exist for the treatment of the `mute iota`_ with
% uppercase letters. The traditional typographic form and the most common
@@ -267,6 +266,14 @@
% glyphs with adscript are a stylistic choice, provided by the font. In the
% CB Fonts, a small capital adscript iota is used.
%
+% The "Latin" diacritics *macron* and *breve* are used to denote the
+% length of vowels. They are sometimes used in dictionaries and textbooks
+% but not part of the Greek orthography. There is no established rule
+% regarding their handling in uppercase. LaTeX used to keep them but
+% the `Unicode reference implementation`__ drops them.
+%
+% __ https://icu.unicode.org/design/case/greek-upper
+%
% Up to 2022/06, macro substitutions in the ``\@uclclist`` could be used to
% get the expected behaviour:
%