The message context can optionally include the guest name if the
argument '-msg guest-name=on' is given. The formatting, however,
does not look good if the guest name contains whitespace. Change
the output to include square brackets to demarcate the name.

Before:

  # qemu-system-x86_64 -object tls-creds-x509,id=t0,dir=fish -d 'trace:qcrypto*' -msg guest-name=on -name "fish food"
  fish food qemu-system-x86_64(1146846:main): qcrypto_tls_creds_x509_load TLS creds x509 load creds=0x55657e94e690 dir=fish
  fish food qemu-system-x86_64(1146846:main): qcrypto_tls_creds_get_path TLS creds path creds=0x55657e94e690 filename=ca-cert.pem path=<none>
  fish food qemu-system-x86_64(1146846:main): Unable to access credentials fish/ca-cert.pem: No such file or directory

After:

  # qemu-system-x86_64 -object tls-creds-x509,id=t0,dir=fish -d 'trace:qcrypto*' -msg guest-name=on -name "fish food"
  [fish food] qemu-system-x86_64(1144713:main): qcrypto_tls_creds_x509_load TLS creds x509 load creds=0x5604ada2c950 dir=fish
  [fish food] qemu-system-x86_64(1144713:main): qcrypto_tls_creds_get_path TLS creds path creds=0x5604ada2c950 filename=ca-cert.pem path=<none>
  [fish food] qemu-system-x86_64(1144713:main): Unable to access credentials fish/ca-cert.pem: No such file or directory

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 util/message.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/util/message.c b/util/message.c
index 5201ffc569..6d3580b7be 100644
--- a/util/message.c
+++ b/util/message.c
@@ -48,11 +48,12 @@ char *qmessage_context(int flags)
         int thid = qemu_get_thread_id();
         const char *thname = qemu_thread_get_name();
 
-        return g_strdup_printf("%s%s%s%s%s(%d:%s): ",
+        return g_strdup_printf("%s%s%s%s%s%s(%d:%s): ",
                                timestr ? timestr : "",
                                timestr ? " " : "",
+                               wknamestr ? "[" : "",
                                wknamestr ? wknamestr : "",
-                               wknamestr ? " " : "",
+                               wknamestr ? "] " : "",
                                pgnamestr ? pgnamestr : "",
                                thid, thname);
     } else {
@@ -60,11 +61,12 @@ char *qmessage_context(int flags)
             return NULL;
         }
 
-        return g_strdup_printf("%s%s%s%s%s%s",
+        return g_strdup_printf("%s%s%s%s%s%s%s",
                                timestr ? timestr : "",
                                timestr ? " " : "",
+                               wknamestr ? "[" : "",
                                wknamestr ? wknamestr : "",
-                               wknamestr ? " " : "",
+                               wknamestr ? "] " : "",
                                pgnamestr ? pgnamestr : "",
                                pgnamestr ? ": " : "");
     }
-- 
2.50.1