${utf8clean:string} expansion operator. Bug 1401

[exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 4faf78d9040d9383ceae6bff65a334426fef8f38..e4cd6ed300cbffb6e111711ffc3b2bbdadbee978 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -10171,6 +10171,14 @@ number of larger units and output in Exim's normal time format, for example,
 .cindex "expansion" "case forcing"
 .cindex "&%uc%& expansion item"
 This forces the letters in the string into upper-case.
+
+.vitem &*${utf8clean*&<&'utf-8 string'&>&*}*&
+.cindex "correction of invalid utf-8 sequences in strings"
+.cindex "utf-8" "utf-8 sequences"
+.cindex "wrong utf-8"
+.cindex "expansion" "utf-8 forcing"
+.cindex "&%utf8clean%& expansion item"
+This replaces any invalid utf-8 sequence in the string by the character &`?`&.
 .endlist