commit 543202c0ddbcc4ee97d82fe45356e1ab00093f90
author Markus Armbruster <armbru@redhat.com> Thu Dec 17 17:35:14 2015 +0100
committer Markus Armbruster <armbru@redhat.com> Wed Jan 13 11:58:58 2016 +0100
tree 44ca326a29cb61e8ae121ab390eb80e65aa50445
parent 9280eb34deb032d7c86275a92651ae63cc5418d5

error: Don't append a newline when printing the error hint

Since commit 50b7b00, we have error_append_hint() to conveniently
accumulate Error member @hint.  error_report_err() prints it with a
newline appended.  Consequently, users of error_append_hint() need to
know whether theirs is the final line of the hint to decide whether it
needs a newline.  Not a nice interface.

Change error_report_err() to print just the hint, and the (still few)
users of error_append_hint() to add the required newline.

Cc: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1450370121-5768-7-git-send-email-armbru@redhat.com>

qdev-monitor.c

diff --git a/qdev-monitor.c b/qdev-monitor.c
index a35098f..30936df 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -304,6 +304,7 @@
         error_append_hint(errp, "%s\"%s\"", sep, child->name);
         sep = ", ";
     }
+    error_append_hint(errp, "\n");
 }
 
 static void qbus_list_dev(BusState *bus, Error **errp)
@@ -321,6 +322,7 @@
         }
         sep = ", ";
     }
+    error_append_hint(errp, "\n");
 }
 
 static BusState *qbus_find_bus(DeviceState *dev, char *elem)

util/error.c

diff --git a/util/error.c b/util/error.c
index 80c89a2..9b27c45 100644
--- a/util/error.c
+++ b/util/error.c
@@ -204,7 +204,7 @@
 {
     error_report("%s", error_get_pretty(err));
     if (err->hint) {
-        error_printf_unless_qmp("%s\n", err->hint->str);
+        error_printf_unless_qmp("%s", err->hint->str);
     }
     error_free(err);
 }

util/qemu-option.c

diff --git a/util/qemu-option.c b/util/qemu-option.c
index a50ecea..a2d593a 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -206,7 +206,7 @@
         default:
             error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size");
             error_append_hint(errp, "You may use k, M, G or T suffixes for "
-                    "kilobytes, megabytes, gigabytes and terabytes.");
+                    "kilobytes, megabytes, gigabytes and terabytes.\n");
             return;
         }
     } else {
@@ -647,7 +647,7 @@
             error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id",
                        "an identifier");
             error_append_hint(errp, "Identifiers consist of letters, digits, "
-                              "'-', '.', '_', starting with a letter.");
+                              "'-', '.', '_', starting with a letter.\n");
             return NULL;
         }
         opts = qemu_opts_find(list, id);