regex101: PCRE (Legacy) Match Workspace

Regular Expression

font-family:\s*'([^']*)'

New

@font-face {
    font-family: 'fancy-icons';
    src:
        url('#{$icon-font-path}/fancy-icons.ttf?p3owtd') format('truetype'),
        url('#{$icon-font-path}/fancy-icons.woff?p3owtd') format('woff'),
        url('#{$icon-font-path}/fancy-icons.svg?p3owtd#fancy-icons') format('svg');
    font-weight: normal;
    font-style: normal;
}

Substitution

@font-face {
    font-family: 'fancy-icons';
    src:
        url('#{$icon-font-path}/fancy-icons.ttf?p3owtd') format('truetype'),
        url('#{$icon-font-path}/fancy-icons.woff?p3owtd') format('woff'),
        url('#{$icon-font-path}/fancy-icons.svg?p3owtd#fancy-icons') format('svg');
    font-weight: normal;
    font-style: normal;
}