This is probably *not news*, but I discovered that there is a way to ignore whitespace in meld. It’s under Edit->Preferences->Text Filters. There’s a setting (in hindsight, obviously) for ignoring changes that insert and delete lines and ones for ignoring whitespace in various forms (and other textual flimflam). Very useful when reviewing commits/branches in git where your colleague has taken the liberty (often rightly so) of cleaning up whitespace, since s/he’s “there already”.
This is more of a note to myself– I found the info via “EdmondsCommerce“.