gbranden pushed a commit to branch master
in repository groff.
commit 450c8323466c5d07ecc6c04df4c9dbfcf193c2f0
Author: G. Branden Robinson <[email protected]>
AuthorDate: Thu Dec 4 23:37:49 2025 -0600
[doc]: Describe character classes better.
---
doc/groff.texi.in | 39 +++++++++++++++++++++++++++++++++++----
1 file changed, 35 insertions(+), 4 deletions(-)
diff --git a/doc/groff.texi.in b/doc/groff.texi.in
index ee7c825a3..631305bd9 100644
--- a/doc/groff.texi.in
+++ b/doc/groff.texi.in
@@ -12600,10 +12600,41 @@ font@tie{}@var{f}.
@cindex character classes
@cindex classes, character
-Classes are particularly useful for East Asian languages such as
-Chinese, Japanese, and Korean, where the number of needed characters is
-much larger than in European languages, and where large sets of
-characters share the same properties.
+GNU
+@command{troff} @c GNU
+can group characters into
+@dfn{classes},
+making manipulation of their breaking
+and/or sentential properties convenient;
+recall the
+@code{cflags}
+request in
+@ref{Using Symbols}.
+Classes are particularly useful
+for East Asian languages such as
+Chinese,
+Japanese,
+and
+Korean,
+which have much larger character repertoires than the
+Latin,
+Greek,
+Cyrillic,
+or
+Thai
+scripts.
+In such large character sets,
+many characters share the same properties.
+Only
+@code{class}
+and
+@code{cflags}
+requests
+can operate on character classes.
+@c TODO:
+@c any other use,
+@c including interpolation,
+@c is an error.
@Defreq {class, name c1 c2 @dots{}}
@cindex character class (@code{class})
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