Always use unicode ellipsis when ellipsizing

We were already unconditionally using the unicode character when the
input string was not pure ASCII, leading to different behaviour in
depending on the input string.

systemd[1]: Starting printit.service.
python3[19962]: foooooooooooooooooooooooooooooooooooo…oooo
python3[19964]: fooąęoooooooooooooooooooooooooooooooo…oooo
python3[19966]: fooąęoooooooooooooooooooooooooooooooo…ąęąę
python3[19968]: fooąęoooooooooooooooooąęąęąęąęąęąęąęą…ąęąę
systemd[1]: Started printit.service.

2 files changed, 6 insertions, 8 deletions

diff --git a/TODO b/TODO
index ba65f7f40f..13d0e47d97 100644
--- a/TODO
+++ b/TODO
@@ -112,8 +112,6 @@ Features:
 * journald: sigbus API via a signal-handler safe function that people may call
   from the SIGBUS handler
 
-* when using UTF8, ellipsize with "…" rather than "...", so that we can show more contents before truncating
-
 * move specifier expansion from service_spawn() into load-fragment.c
 
 * optionally, also require WATCHDOG=1 notifications during service start-up and shutdown
diff --git a/src/basic/string-util.c b/src/basic/string-util.c
index 5d4510e1b3..dc7de5dab8 100644
--- a/src/basic/string-util.c
+++ b/src/basic/string-util.c
@@ -443,7 +443,7 @@ static char *ascii_ellipsize_mem(const char *s, size_t old_length, size_t new_le
         if (old_length <= 3 || old_length <= new_length)
                 return strndup(s, old_length);
 
-        r = new0(char, new_length+1);
+        r = new0(char, new_length+3);
         if (!r)
                 return NULL;
 
@@ -453,12 +453,12 @@ static char *ascii_ellipsize_mem(const char *s, size_t old_length, size_t new_le
                 x = new_length - 3;
 
         memcpy(r, s, x);
-        r[x] = '.';
-        r[x+1] = '.';
-        r[x+2] = '.';
+        r[x] = 0xe2; /* tri-dot ellipsis: … */
+        r[x+1] = 0x80;
+        r[x+2] = 0xa6;
         memcpy(r + x + 3,
-               s + old_length - (new_length - x - 3),
-               new_length - x - 3);
+               s + old_length - (new_length - x - 1),
+               new_length - x - 1);
 
         return r;
 }