From this question, how do I change it to have first letter of every word in uppercase with a command and only first word's first letter in uppercase with another command (still supporting plural form) form like below:
\documentclass[a4paper,12pt]{article}\usepackage{glossaries}\usepackage{glossary-mcols}\makeatletter\let\oldmakefirstuc\makefirstuc\renewcommand*{\makefirstuc}[1]{% \def\gls@add@space{}% \mfu@capitalisewords#1 \@nil\mfu@endcap}\def\mfu@capitalisewords#1 #2\mfu@endcap{% \def\mfu@cap@first{#1}% \def\mfu@cap@second{#2}% \gls@add@space \oldmakefirstuc{#1}% \def\gls@add@space{ }% \ifx\mfu@cap@second\@nnil \let\next@mfu@cap\mfu@noop \else \let\next@mfu@cap\mfu@capitalisewords \fi \next@mfu@cap#2\mfu@endcap}\makeatother\newglossaryentry{word}{ name = {word}, description = {word description}, plural = {words}, descriptionplural = {words description}}\newglossaryentry{good word}{ name = {good word}, description = {good word description}, plural = {good words}, descriptionplural = {good words description}, parent = {word}}\makeglossaries\begin{document}1. \gls{word}% correct2. \Gls{word}% correct3. \glspl{word}% correct4. \Glspl{word}% correct5. \glsfirst{word}% correct6. \Glsfirst{word}% correct7. \glsplfirst{word}% gives error8. \Glsplfirst{word}% gives error, doesn't capitalize1p. \gls{good word}% correct2p. \Gls{good word}% correct, it capitalizes every words first letter3p. \glspl{good word}% correct4p. \Glspl{good word}% correct, it capitalizes every words first letter and does plural5p. \glsfirst{good word}% correct, it capitalizes every words first letter and does plural6p. \Glsfirst{good word}% wrong, it should capitalize only first's words first letter.7p. \glsplfirst{good word}% gives error, doesn't make plural8p. \Glsplfirst{good word}% gives error, doesn't capitalize first word's first letter and doesn't make plural\printglossary[style=mcoltreespannav]\end{document}Result: