cookbook/texmf/helpers.sty

\ProvidesPackage{helpers}[2019/11/15 Common/Personal Utility
Commands]

\RequirePackage{ifdraft}
\RequirePackage{setspace}
\RequirePackage{ifmtarg}

\newcommand\mycommon@font{\textit}
\newcommand\foreign[1]{\mycommon@font{#1}}

\ProcessOptions\relax

\ifdraft{\RequirePackage{background}\backgroundsetup{contents={DRAFT}}}
\ifdraft{\RequirePackage[color]{showkeys}}
\ifdraft{\RequirePackage{setspace}\AtBeginDocument{\doublespace}}


\newcommand\@ensurecomma{\@ifnextchar,{}{\PackageWarning{helpers}{
      You appear to have forgotten a necessary comma}}}

\newcommand\@ensuresingleperiod{\@ifnextchar.{}{.\@\PackageWarning{helpers}{
      You appear to have forgotten a necessary period}}}

\newcommand\commaabbrev[2]{\newcommand#1{\mycommon@font{#2}\@ensurecomma}}
\newcommand\spaceabbrev[2]{\newcommand#1{\mycommon@font{#2}\ }}
\newcommand\periodabbrev[2]{\newcommand#1{\mycommon@font{#2}\@ensuresingleperiod}}

\commaabbrev{\eg}{e.g.}
\commaabbrev{\Eg}{E.g.}
\commaabbrev{\ie}{i.e.}
\commaabbrev{\Ie}{I.e.}
\commaabbrev{\viz}{viz.}
\commaabbrev{\Viz}{Viz.}
\commaabbrev{\ibid}{ibid.}
\commaabbrev{\Ibid}{Ibid.}
\commaabbrev{\ia}{i.a.}
\commaabbrev{\Ia}{I.a.}

\spaceabbrev{\cf}{cf.}
\spaceabbrev{\Cf}{Cf.}


\periodabbrev{\etal}{et al}
\periodabbrev{\Etal}{Et al}
\periodabbrev{\etc}{\&c}
\periodabbrev{\Etc}{\&c}
\periodabbrev{\etseq}{et seq}
\periodabbrev{\Etseq}{Et seq}
\periodabbrev{\Sic}{Sic}

\endinput