User:Waldyrious/whitespacefixer.js

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Documentation for this user script can be added at User:Waldyrious/whitespacefixer.

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// Fork of [[User:Omegatron/monobook.js/headingformattingfixer.js]],
// without the code to normalize headings
// (i.e. add spaces within the equal signs, and newlines after the headings)
// since it produced dirty diffs too often.
// Diff of the original fork: https://en.wikipedia.org?diff=625426859&oldid=625426743
function whitespacefixer() {
    var txt = document.editform.wpTextbox1;

    // 1 blank line before the headings 
    // (this is super-kludgy because of the newlines conflicting when one heading is right after another)
    // (seems to work, though, for now.  some other day...)
    txt.value = txt.value.replace(/(\n+={2,}) (.*?) (={2,})/g, '\n\n$1 $2 $3');

    // Remove all extra newlines?
    txt.value = txt.value.replace(/(\n[ \t\v\r\f]*){2,}/g, '\n\n');

    // One space after * and # lists, and after : and ;
    txt.value = txt.value.replace(/(^|\n)((\*|\#|\;|\:)+)\s*(\w|\[|\"|\'|\{\{)/g, '$1$2 $4');

    // Add a tag to the summary box
    var editSummary = document.editform.wpSummary;
    var appendToSummary = "cleanup whitespace (using [[w:en:User:Waldir/whitespacefixer.js|Regex whitespace fixer]])";
    if (editSummary.value.indexOf(appendToSummary) == -1) {
        if (editSummary.value.match(/[^\*\/\s][^\/\s]?\s*$/)) {
            editSummary.value += "; ";
        }
        editSummary.value += appendToSummary;
    }
}

$(function () {
    if(document.forms.editform) {
        mw.util.addPortletLink('p-cactions', 'javascript:whitespacefixer()', '_', 'ca-whitespacefixer', 'Fix whitespace', '-', '');
    }
});