On Fr, 12 Jun 2015, Christian Brabandt wrote:
> Bram,
> :h expr-string states
>
> ,----
> | \u.... character specified with up to 4 hex numbers, stored according
> | to the current value of 'encoding' (e.g., "\u02a4")
> | \U.... same as \u....
> `----
>
> However when using i_Ctrl-V_digit, one can use 'U' for up to 8
> characters and using \%U also takes up to 8 digits.
>
> So I think, it makes sense to have \U in a quoted string also accept up
> to 8 characters.
Updated patch, including documentation attached.
Best,
Christian
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diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1021,7 +1021,7 @@ A string constant accepts these special
\X. same as \x.
\u.... character specified with up to 4 hex numbers, stored according to the
current value of 'encoding' (e.g., "\u02a4")
-\U.... same as \u....
+\U.... same as \u but allows up to 8 hex numbers.
\b backspace <BS>
\e escape <Esc>
\f formfeed <FF>
diff --git a/src/eval.c b/src/eval.c
--- a/src/eval.c
+++ b/src/eval.c
@@ -5745,8 +5745,10 @@ get_string_tv(arg, rettv, evaluate)
if (c == 'X')
n = 2;
+ else if (*p == 'u')
+ n = 4;
else
- n = 4;
+ n = 8;
nr = 0;
while (--n >= 0 && vim_isxdigit(p[1]))
{
