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Computing {tweak, bug, annoyance} of the day...

Tweak of the day:
Problem: Cygwin doesn't support UTF-8, which leads to issues with unicode filenames (e.g. when running backups).

Solution: for Cygwin, download the patch from http://www.okisoft.co.jp/esc/utf8-cygwin/
in .bashrc:
export LC_CTYPE=en_US.UTF-8
export LANG=en_US.UTF-8
alias ls='ls --show-control-chars'
Terminal: mrxvt doesn't support unicode, but urxvt does.  If urxvt is not using unicode fonts by default (or the font is ugly), figure out which fonts are unicode by doing xlsfonts | grep iso10646 and put one of those fonts into .Xdefaults in the form:
URxvt*font: -misc-dejavu sans mono-medium-r-normal--*-120-*-*-m-0-iso10646-1
Don't forget to re-read .Xdefaults using xrdb < ~/.Xdefaults.

Bug of the day: sometimes my Emacs responds to C-k by performing winner-undo.  Version 22.3 did that sometimes, 23 does that more often.  Bizarre.

Annoyance Tweak #2 of the day: Emacs page down and then page up does not return the cursor to the same location.  Annoying if page-downs are accidental.  (Turns out that there's a simple fix: (setq scroll-preserve-screen-position t).  Incidentally, in the Usenet thread discussing this, another useful trick came up: C-u C-SPC pops the mark.  So, for a quick-and-dirty bookmark, one could use C-SPC or C-SPC-g to set and C-u-SPC to jump back!)

"Well, this wasted my time" of the day:  I aliased grep to produce a more colorful and informative output.  Some time later my ssh agent broke -- it kept asking for my password.  Took me some time to connect the two, but what happened was: the ssh agent script is invoked via source, meaning aliased commands are used -- meaning it was getting unexpected output from my grep.  Clever fix: replace grep with `which grep` -- this effectively bypasses bash aliasing.   Cleverer fix: don't alias things that are important and are likely to be found in scripts.

"Makes my life easier" of the day:  with Firefox 3.5 you can set gmail to handle mailto: links.  Very handy -- no more stupid Outlook popups.  Details at http://googlesystem.blogspot.com/2009/06/set-gmail-as-default-email-client-in.html

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