src: Introduce a <percent> named key

Similarly to the <semicolon> key, make it easier to write
`:execute-keys` commands by replacing <percent> with `%`.

Highlighters can keep escaping the sign when regular expressions are
not quoted, but built-in scripts that use `%` as an editing primitive
have been modified to use the named key, for clarity.

1 files changed, 1 insertions, 1 deletions

diff --git a/rc/detection/modeline.kak b/rc/detection/modeline.kak
index b9e4bb70..3784a081 100644
--- a/rc/detection/modeline.kak
+++ b/rc/detection/modeline.kak
@@ -96,7 +96,7 @@ define-command -hidden modeline-parse-impl %{
 #   [text]{white}{vi:|vim:|Vim:|ex:}[white]se[t] {options}:[text]
 define-command modeline-parse -docstring "Read and interpret vi-format modelines at the beginning/end of the buffer" %{
     try %{ evaluate-commands -draft %{
-        execute-keys \%s\A|.\z<ret> %opt{modelines}k <a-x> %opt{modelines}X \
+        execute-keys <percent> s\A|.\z<ret> %opt{modelines}k <a-x> %opt{modelines}X \
              s^\S*?\s+?(vim?|kak(oune)?):\s?[^\n]+<ret> <a-x>
         evaluate-commands -draft -itersel modeline-parse-impl
     } }