diff options
Diffstat (limited to 'macros/latex/contrib/l3kernel/l3sys.dtx')
-rw-r--r-- | macros/latex/contrib/l3kernel/l3sys.dtx | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/macros/latex/contrib/l3kernel/l3sys.dtx b/macros/latex/contrib/l3kernel/l3sys.dtx index af09373f25..24e79512c7 100644 --- a/macros/latex/contrib/l3kernel/l3sys.dtx +++ b/macros/latex/contrib/l3kernel/l3sys.dtx @@ -43,7 +43,7 @@ % }^^A % } % -% \date{Released 2019-10-28} +% \date{Released 2019-11-07} % % \maketitle % @@ -395,7 +395,10 @@ { \sys_finalise: \str_if_exist:NTF \c_sys_backend_str - { \__kernel_msg_error:nn { sys } { backend-set } } + { + \str_if_eq:VnF \c_sys_backend_str {#1} + { \__kernel_msg_error:nn { sys } { backend-set } } + } { \tl_if_blank:nF {#1} { \tl_set:Nn \g_@@_backend_tl {#1} } |