Recent Changes

2019-10-21

• 18:59 UTC (new) (history) 2019-10-21 Clearing the Eshell buffer . . . . Marcin Borkowski – Since I’ve been quite busy recently, I only have one short tip today. I sometimes use Eshell, and sometimes want to clear it so that I can e.g. isearch through the result of running some command and not be bothered by the output of previous commands. In such a case, I can say clear, but it does not really clear the Eshell buffer – it only makes the part above point scroll past the visible part (and it seems that it doesn’t even take into account the font – if I make it smaller, clear does not scroll enough). But I can also give clear any argument (e.g., say clear t), and then the previous contents of the buffer are really deleted. Handy.

2019-10-12

• 11:58 UTC (new) (history) 2019-10-12 Challenge accepted - a Node.js grep . . . . Marcin Borkowski – An old friend of mine posted a challenge on Twitter to implement a grep-like utility in one’s language of choice. Instead of complaining that he’s got an unfair advantage – he is a Pythonista, and Python is almost as well-suited to that kind of tasks as Perl – I decided to accept the challenge. Of course, I had to start with Emacs Lisp.
• 11:53 UTC (diff) (history) Comments on 2019-10-07 A tip with diffing (and committing) program structure changes . . . . Marcin Borkowski – Yep, I tried to be comprehensive. :-)

2019-10-07

• 20:23 UTC (new) (history) 2019-10-07 A tip with diffing (and committing) program structure changes . . . . Marcin Borkowski – As I mentioned last week, the fact that diff works on a line basis is sometimes a source of trouble. Consider this case. Assume that we have a simple JavaScript module greets (I guess that a very similar case could be made for Java classes, Python modules etc.).

2019-09-30

• 20:33 UTC (new) (history) 2019-09-30 diff and ignoring lines . . . . Marcin Borkowski – One of the most well-known commandline tools is the classical diff program. On my system, it is (of course) the GNU diff, which is a part of the GNU diffutils package. Recently, I found out that GNU diff has an interesting option, -I (or --ignore-matching-lines). You can give it a regex and it will ignore added or deleted lines if they contain a match for this regex. This may be useful in many circumstances.

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