编译我的项目时，我收到与 l3experimental 包相关的错误。
从日志文件中：
("C:\Program Files\MiKTeX 2.9\tex\latex\l3experimental\l3str\l3tl-build.sty"
Package: l3tl-build 2015/07/28 v5700 L3 Experimental token list construction
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! LaTeX error: "kernel/command-already-defined"
!
! Control sequence \l__tl_build_start_index_int already defined.
!
! See the LaTeX3 documentation for further information.
!
! For immediate help type H <return>.
!...............................................
l.65 \int_new:N \l__tl_build_start_index_int
|'''''''''''''''''''''''''''''''''''''''''''''''
| This is a coding error.
|
| LaTeX has been asked to create a new control sequence
| '\l__tl_build_start_index_int' but this name has already been used
| elsewhere.
|
| The current meaning is:
| \count126
|...............................................
\l__tl_build_start_index_int=\count305
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! LaTeX error: "kernel/command-already-defined"
!
! Control sequence \l__tl_build_index_int already defined.
!
! See the LaTeX3 documentation for further information.
!
! For immediate help type H <return>.
!...............................................
l.66 \int_new:N \l__tl_build_index_int
|'''''''''''''''''''''''''''''''''''''''''''''''
| This is a coding error.
|
| LaTeX has been asked to create a new control sequence
| '\l__tl_build_index_int' but this name has already been used elsewhere.
|
| The current meaning is:
| \count127
|...............................................
\l__tl_build_index_int=\count306
和许多其他控制序列一样。我正在研究一个发生错误的最小示例。谢谢！
答案1
该l3tl-build软件包已移至内核。通常，软件包会有一个过渡期，在此期间，软件包只会发出警告，但在这种情况下，我们没有这样做（有点错误）。l3tl-build不进行过渡就将其移除的充分理由是：它不提供任何用户功能！
无论如何，最好有更清晰的错误消息，所以现在我们生成一个l3tl-build.sty产生错误的过渡。