22014: argument-base, insert-unicode-char

Functions/Zle/.distfiles

@@ -9,6 +9,7 @@ edit-command-line              forward-word-match
 history-pattern-search         history-search-end
 incarg                         incremental-complete-word
 insert-composed-char           insert-files
+insert-unicode-char
 keeper                         kill-word-match
 match-words-by-style           narrow-to-region
 narrow-to-region-invisible     predict-on

Functions/Zle/insert-unicode-char

@@ -0,0 +1,17 @@
+# Make hex integers appear as 0x...
+setopt localoptions cbases
+
+if [[ $LASTWIDGET = insert-unicode-char ]]; then
+  # Second call; we should have a usable prefix.
+  # If we don't, give up.
+  (( ${+NUMERIC} )) || return 1
+  # Convert it back to hex, padded with zeroes to 8 digits plus the 0x...
+  local -i 16 -Z 10 arg=$NUMERIC
+  # ...and use print to turn this into a Unicode character.
+  LBUFFER+="$(print -n "\U${arg##0x}")"
+else
+  # Set the base to 16...
+  zle argument-base 16
+  # ...wait for user to type hex keys then call this widget again.
+  zle universal-argument
+fi