How can I select or highlight a block in Emacs?

If I understand the question correctly, it is not about rectangular regions originally. C-Spc puts a mark at the current position. Wherever your cursor is afterwards, the text between the last mark and the current position is “selected” (you can highlight this by activating transient-mark-mode, but this will also mean that marks have to be … Read more

Highlight changed lines and changed bytes in each changed line

The diff-highlight Perl contrib script produces output so similar to that of the Trac screenshots that it is likely that Trac is using it: Install with: wget https://raw.githubusercontent.com/git/git/fd99e2bda0ca6a361ef03c04d6d7fdc7a9c40b78/contrib/diff-highlight/diff-highlight && chmod +x diff-highlight Move the file diff-highlight to the ~/bin/ directory (or wherever your $PATH is), and then add the following to your ~/.gitconfig: [pager] diff … Read more

How do you make an element “flash” in jQuery

My way is .fadein, .fadeout .fadein, .fadeout …… $(“#someElement”).fadeOut(100).fadeIn(100).fadeOut(100).fadeIn(100); function go1() { $(“#demo1″).fadeOut(100).fadeIn(100).fadeOut(100).fadeIn(100)} function go2() { $(‘#demo2’).delay(100).fadeOut().fadeIn(‘slow’) } #demo1, #demo2 { text-align: center; font-family: Helvetica; background: IndianRed; height: 50px; line-height: 50px; width: 150px; } <script src=”https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js”></script> <button onclick=”go1()”>Click Me</button> <div id=’demo1′>My Element</div> <br> <button onclick=”go2()”>Click Me</button> (from comment) <div id=’demo2′>My Element</div>