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-rw-r--r--doc_src/faq.hdr5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc_src/faq.hdr b/doc_src/faq.hdr
index 5ec12552..abbedb8b 100644
--- a/doc_src/faq.hdr
+++ b/doc_src/faq.hdr
@@ -215,6 +215,11 @@ cd /usr/local/bin
rm -f fish fish_indent
\endfish
+<hr>
+\section faq-reserved-chars Unicode private-use characters reserved by fish
+
+Fish reserves the <a href="http://www.unicode.org/faq/private_use.html">Unicode private-use character range</a> from U+F600 thru U+F73F for internal use. Any attempt to feed characters in that range to fish will result in them being replaced by the Unicode "replacement character" U+FFFD. This includes both interactive input as well as any file read by fish (but not programs run by fish).
+
\htmlonly[block]
</div>
\endhtmlonly