Sketch SVG exportCompactSVG

after.svg

before.svg

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg width="22px" height="22px" viewBox="0 0 22 22" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:sketch="http://www.bohemiancoding.com/sketch/ns">
    <!-- Generator: Sketch 3.1.1 (8761) - http://www.bohemiancoding.com/sketch -->
    <title>twitter</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
        <g id="twitter" sketch:type="MSArtboardGroup" fill="#666666">
            <path d="M19.8059,5.8296 C19.1492,6.1196 18.4434,6.3159 17.7026,6.4043 C18.4586,5.9529 19.0393,5.2378 19.3127,4.386 C18.6051,4.804 17.8214,5.1074 16.9872,5.2712 C16.3192,4.562 15.3674,4.1191 14.3141,4.1191 C12.2917,4.1191 10.652,5.7524 10.652,7.7671 C10.652,8.053 10.6843,8.3315 10.7468,8.5984 C7.7032,8.4463 5.0048,6.9939 3.1986,4.7871 C2.8833,5.3257 2.7028,5.9521 2.7028,6.6206 C2.7028,7.8865 3.3491,9.0029 4.3319,9.657 C3.7317,9.6382 3.1669,9.4741 2.6732,9.2009 C2.6729,9.2161 2.6729,9.2312 2.6729,9.2466 C2.6729,11.0142 3.9352,12.4885 5.6105,12.8237 C5.3032,12.9072 4.9796,12.9517 4.6456,12.9517 C4.4097,12.9517 4.1803,12.9287 3.9567,12.886 C4.4227,14.3354 5.7751,15.3901 7.3777,15.4194 C6.1244,16.3982 4.5453,16.9812 2.8295,16.9812 C2.5339,16.9812 2.2424,16.9639 1.9559,16.9302 C3.5765,17.9653 5.5015,18.5693 7.5696,18.5693 C14.3055,18.5693 17.9891,13.0105 17.9891,8.1899 C17.9891,8.0317 17.9856,7.8745 17.9786,7.718 C18.6941,7.2039 19.3149,6.5613 19.8059,5.8296 L19.8059,5.8296 Z" id="Shape" sketch:type="MSShapeGroup"></path>
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defaults write com.bohemiancoding.sketch3 exportCompactSVG -bool yes

Source: http://bohemiancoding.com/sketch/support/documentation/13-preferences/