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-rw-r--r--runtime/doc/digraph.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/runtime/doc/digraph.txt b/runtime/doc/digraph.txt
index bd47f5ca2c..1e91e5e4b8 100644
--- a/runtime/doc/digraph.txt
+++ b/runtime/doc/digraph.txt
@@ -168,6 +168,13 @@ ROUBLE
The rouble sign was added in 2014 as 0x20bd. Vim supports the digraphs =R and
=P for this. Note that R= and P= are other characters.
+QUADRUPLE PRIME
+
+The quadruple prime using the digraph 4' was added in 2023. Although it is
+not part of RFC 1345, it supplements the existing digraph implementation as
+there already exist digraphs for PRIME, DOUBLE PRIME and TRIPLE PRIME using
+the 1', 2' and 3' digraphs.
+
*digraph-table* *digraph-table-mbyte*
>
char digraph hex dec official name
@@ -920,6 +927,7 @@ The rouble sign was added in 2014 as 0x20bd. Vim supports the digraphs =R and
′ 1' 2032 8242 PRIME
″ 2' 2033 8243 DOUBLE PRIME
‴ 3' 2034 8244 TRIPLE PRIME
+ ⁗ 4' 2057 8279 QUADRUPLE PRIME
‵ 1" 2035 8245 REVERSED PRIME
‶ 2" 2036 8246 REVERSED DOUBLE PRIME
‷ 3" 2037 8247 REVERSED TRIPLE PRIME