diff

DateTime::Diff should calculate a proper interval and take into account Daylight Savings Time (DST) and leap years. Although apparently it isn't so. Code of horror: $d1 = new DateTime("2011-10-30 01:05:00", new DateTimeZone("Europe/Stockholm")); $d2 = new DateTime("2011-10-30 03:05:00", new DateTimeZone("Europe/Stockholm")); echo $d1->getOffset() / (60 * 60); Prints '2'! Keep in mind thus that UTC time = 1h - 2h = 23:05:00 the day before. echo $d2->getOffset() / (60 * 60); Prints '1'. DST happened. UTC time = 3h - 1h = 02:05:00. $di = $d1->diff($d2); echo "Hours of DateInterval: " . $di->h;

git diff does not support a case-insensitive comparison of files. Google shows a very few people asking for that feature, and that too only in combination with some other git diff switch, like with -G or with --color-words . I don't care for other switches, as long as git diff can show me the case-insensitive diff. Since I didn't see any specific question towards that, and since I found a solution after an hour researching this problem, I am adding this question and the answer. The solution is to use git difftool . With the following config command, I can add a custom diff tool called idiff

I use SVN as the source control system, and I wonder how to compare directories while ignoring any metadata differences. Is there a way to tell svn diff to compare only the actual content and ignore any metadata? I mean metadata like SVN properties, etc. that don't affect the file content. Assume file X has an additional property in branch B compared to trunk T. Unfortunately it will show up in 'svn diff T B' even though the actual content of file X is the same. I look for something like this: svn diff https://example.org/tags/v1 https://example.org/tags/v2 -x -ignore-metadata --summarize