unit: print the color status marks on the left

The alignment of the "[  OK  ]" and "[FAILED]" status marks to the right
side of the terminal makes it difficult to link them with the messages
on the left if your console is wide.

I considered the options:
 1. Align them to the 80th column regardless of the console width.
    Disadvantage - either:
    - truncating messages needlessly, not using available space; or
    - If the message is long, write the mark over it. => ugly
 2. Write them to the 80th column for short messages,
    and further to the right for longer ones.
    Disadvantage:
    - jagged look
 3. Write the marks on the left, before the message.
    Disadvantage:
    - Breaks tradition from RHL.
    Advantages:
    + slightly simpler code
    + Will annoy holy-traditionalists.

I chose option 3.
BTW, Debian now uses similar marks on the left with its makefile-style
boot.

Special values of the "status" argument to status_vprintf are:
  NULL - no status mark, no message indentation
  ""   - no status mark, message indented as if the mark was there

1 files changed, 2 insertions, 2 deletions

diff --git a/src/core/unit.c b/src/core/unit.c
index 68948574ed..ddcfad5912 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -981,7 +981,7 @@ int unit_start(Unit *u) {
 
         unit_add_to_dbus_queue(u);
 
-        unit_status_printf(u, NULL, "Starting %s...", unit_description(u));
+        unit_status_printf(u, "", "Starting %s...", unit_description(u));
         return UNIT_VTABLE(u)->start(u);
 }
 
@@ -1023,7 +1023,7 @@ int unit_stop(Unit *u) {
 
         unit_add_to_dbus_queue(u);
 
-        unit_status_printf(u, NULL, "Stopping %s...", unit_description(u));
+        unit_status_printf(u, "", "Stopping %s...", unit_description(u));
         return UNIT_VTABLE(u)->stop(u);
 }