Incomplete 'command not found' error message if command name contains spaces

[Robin A. Meade]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-redhat-linux-gnu' -DCONF_VENDOR='redhat' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib  -D_GNU_SOURCE -DRECYCLES_PIDS -DDEFAULT_PATH_VALUE='/usr/local/bin:/usr/bin'  -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches  -m64 -mtune=generic
uname output: Linux localhost.localdomain 3.18.9-100.fc20.x86_64 #1 SMP Mon Mar 9 16:27:23 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-redhat-linux-gnu

Bash Version: 4.3
Patch Level: 30
Release Status: release

Description:

If I try to execute a nonexistent command name that has spaces, the error message includes only up to the first space of the command name.

$ "a nonexistent command name with spaces"
bash: a: command not found...


Expected:

$ "a nonexistent command name with spaces"
bash: a nonexistent command name with spaces: command not found...