content.js

!function(){var e,n,t,r,i,f,_,a,o,s,u,h,l,c,d,b,p;o=function(e){return">"===e},s=function(e){return"<"===e},h=function(e){return/^\s+$/.test(e)},u=function(e){return/^\s*<[^>]+>\s*$/.test(e)},l=function(e){return!u(e)},e=function(){return function(e,n,t){this.start_in_before=e,this.start_in_after=n,this.length=t,this.end_in_before=this.start_in_before+this.length-1,this.end_in_after=this.start_in_after+this.length-1}}(),a=function(e){var n,t,r,i,f,_;for(f="char",t="",_=[],r=0,i=e.length;r<i;r++)switch(n=e[r],f){case"tag":o(n)?(t+=">",_.push(t),t="",f=h(n)?"whitespace":"char"):t+=n;break;case"char":s(n)?(t&&_.push(t),t="<",f="tag"):/\s/.test(n)?(t&&_.push(t),t=n,f="whitespace"):/[\w\#@]+/i.test(n)?t+=n:(t&&_.push(t),t=n);break;case"whitespace":s(n)?(t&&_.push(t),t="<",f="tag"):h(n)?t+=n:(t&&_.push(t),t=n,f="char");break;default:throw new Error("Unknown mode "+f)}return t&&_.push(t),_},f=function(n,t,r,i,f,_,a){var o,s,u,h,l,c,d,b,p,g,w,v,k,m,y;for(s=i,o=_,u=0,w={},c=h=m=i,y=f;m<=y?h<y:h>y;c=m<=y?++h:--h){for(k={},d=0,b=(p=r[n[c]]).length;d<b;d++)if(!((l=p[d])<_)){if(l>=a)break;null==w[l-1]&&(w[l-1]=0),v=w[l-1]+1,k[l]=v,v>u&&(s=c-v+1,o=l-v+1,u=v)}w=k}return 0!==u&&(g=new e(s,o,u)),g},d=function(e,n,t,r,i,_,a,o){var s;return null!=(s=f(e,0,t,r,i,_,a))&&(r<s.start_in_before&&_<s.start_in_after&&d(e,n,t,r,s.start_in_before,_,s.start_in_after,o),o.push(s),s.end_in_before<=i&&s.end_in_after<=a&&d(e,n,t,s.end_in_before+1,i,s.end_in_after+1,a,o)),o},r=function(e){var n,t,r,i,f,_;if(null==e.find_these)throw new Error("params must have find_these key");if(null==e.in_these)throw new Error("params must have in_these key");for(r={},n=0,i=(f=e.find_these).length;n<i;n++)for(r[_=f[n]]=[],t=e.in_these.indexOf(_);-1!==t;)r[_].push(t),t=e.in_these.indexOf(_,t+1);return r},_=function(e,n){var t,i;return i=[],t=r({find_these:e,in_these:n}),d(e,n,t,0,e.length,0,n.length,i)},n=function(n,t){var r,i,f,a,o,s,u,h,l,c,d,b,p,g,w,v;if(null==n)throw new Error("before_tokens?");if(null==t)throw new Error("after_tokens?");for(w=g=0,p=[],r={"false,false":"replace","true,false":"insert","false,true":"delete","true,true":"none"},(d=_(n,t)).push(new e(n.length,t.length,0)),a=f=0,h=d.length;f<h;a=++f)"none"!==(i=r[[w===(c=d[a]).start_in_before,g===c.start_in_after].toString()])&&p.push({action:i,start_in_before:w,end_in_before:"insert"!==i?c.start_in_before-1:void 0,start_in_after:g,end_in_after:"delete"!==i?c.start_in_after-1:void 0}),0!==c.length&&p.push({action:"equal",start_in_before:c.start_in_before,end_in_before:c.end_in_before,start_in_after:c.start_in_after,end_in_after:c.end_in_after}),w=c.end_in_before+1,g=c.end_in_after+1;for(v=[],u={action:"none"},o=function(e){return"equal"===e.action&&(e.end_in_before-e.start_in_before==0&&/^\s$/.test(n.slice(e.start_in_before,+e.end_in_before+1||9e9)))},s=0,l=p.length;s<l;s++)o(b=p[s])&&"replace"===u.action||"replace"===b.action&&"replace"===u.action?(u.end_in_before=b.end_in_before,u.end_in_after=b.end_in_after):(v.push(b),u=b);return v},t=function(e,n,t){var r,i,f,_,a,o;for(_=void 0,f=i=0,a=(n=n.slice(e,+n.length+1||9e9)).length;i<a&&(o=n[f],!0===(r=t(o))&&(_=f),!1!==r);f=++i);return null!=_?n.slice(0,+_+1||9e9):[]},p=function(e,n){var r,i,f,_,a;for(_="",f=0,r=n.length;;){if(f>=r)break;if(i=t(f,n,l),f+=i.length,0!==i.length&&(_+="<"+e+">"+i.join("")+"</"+e+">"),f>=r)break;f+=(a=t(f,n,u)).length,_+=a.join("")}return _},(c={equal:function(e,n,t){return n.slice(e.start_in_before,+e.end_in_before+1||9e9).join("")},insert:function(e,n,t){var r;return r=t.slice(e.start_in_after,+e.end_in_after+1||9e9),p("ins",r)},delete:function(e,n,t){var r;return r=n.slice(e.start_in_before,+e.end_in_before+1||9e9),p("del",r)}}).replace=function(e,n,t){return c.delete(e,n,t)+c.insert(e,n,t)},b=function(e,n,t){var r,i,f,_;for(_="",r=0,i=t.length;r<i;r++)f=t[r],_+=c[f.action](f,e,n);return _},(i=function(e,t){var r;return e===t?e:(e=a(e),t=a(t),r=n(e,t),b(e,t,r))}).html_to_tokens=a,i.find_matching_blocks=_,_.find_match=f,_.create_index=r,i.calculate_operations=n,i.render_operations=b,"function"==typeof define?define([],function(){return i}):"undefined"!=typeof module&&null!==module?module.exports=i:"undefined"!=typeof window&&(window.htmldiff=i)}();


window.setTimeout(myMain, 2000);
function myMain (evt) {
    var elements = document.getElementsByClassName('o_mail_thread_message_tracking');
    for (var i = 0; i < elements.length; i++) {
        elem = elements[i];
        if (elem.innerHTML.includes('Python')) {
            var spans = elem.getElementsByTagName('span');
            if (spans.length >2) {
                let a = spans[0].innerHTML;
                let b = spans[2].innerHTML;
                let output = htmldiff(a, b).replace(/(?:\r\n|\r|\n)/g, '<br>');
                spans[0].innerHTML = '';
                spans[2].innerHTML = output;
            }
        }
    }
}