%% 
%% This is file `phy-bm-um.legacy.sty',
%% the `bm-um.legacy' module of `physics2' package.
%% 
%% ******************************************************
%% * This work may be distributed and/or modified under *
%% * the conditions of the LaTeX Project Public License *
%% *                                                    *
%% *     http://www.latex-project.org/lppl.txt          *
%% *                                                    *
%% * either version 1.3c of this license or any later   *
%% * version.                                           *
%% ******************************************************
%% 
%% This work has the LPPL maintenance status `maintained'.
%% 
%% The Current Maintainer of this work is Zhang Tingxuan.
%% 
\ProvidesExplFile{phy-bm-um.legacy.sty}{2023/01/25}{}
  {`bm-um.legacy' module of `physics2.sty'}
\AtBeginDocument
  {
    \cs_if_exist:cF { symbf }
      {
        \PackageError { physics2 }
          {
            The ~ `bm-um.legacy' ~ module ~ requires ~
            `unicode-math' ~ package
          }
          {
            Have ~ you ~ used ~ `unicode-math' ~
            in ~ the ~ preamble?
          }
      }
  }
\DeclareDocumentCommand \bm { m }
  {
    \mode_if_math:TF
      {
        \tl_if_head_eq_catcode:nNTF { #1 } A
          {
            \symbfit { #1 }
          }
          {
            \symbf { #1 }
          }
      }
      {
        \PackageError { physics2 }
          {
            The ~ \string\bm\space command ~ should ~ be ~
            used ~ in ~ math ~ mode ~ only. \MessageBreak
            This ~ is ~ an ~ error ~ from ~ `bm-um.legacy' ~ module
          }
          {
            Check ~ if ~ any ~ `\string\bm' ~ is ~ out ~
            of ~ math ~ mode.
          }
      }
  }
\endinput
%% End of file `phy-bm-um.legacy.sty'.