Cory O'Daniel – These are just words Software development, thoughts, and randomness

7May/101

Ruby 1.9 Date#strftime adds a space on %b

So, I had a spec failing in my integration suite and I couldn't figure out what the hell it was - EVERYTHING LOOKED LEGIT. I even logged into the site, and visually verified it. Whats the dilly?

I upgraded to ruby 1.9 from ruby 1.8 and apparently, when doing strftime on date, you get a free whitespace character with "%b"

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# Ruby 1.8
irb(main):006:0> Date.today.strftime("%b %e, %Y")
=> "May 7, 2010"
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irb(main):007:0> Date.today.strftime("%b %e, %Y")
=> "May  7, 2010" # TWO SPACES

Super dumb - wasted a good 10 minutes of my day because I could see the diff between:

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"May  7, 2010"
"May 7, 2010"

In the middle of a web page full of other content.

Why the freebee space character on the %b? Dunno. I just smashed my stftime statement together and my specs are rolling.

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Date.today.strftime("%b%e, %Y")

Uh, yeah - this is my bug report.

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  1. Just ran into this today. It’s actually the %e that is adding a space behind it. If the day was 2 digits (e.g. May 17) it won’t add a leading space. So smashing the strftime together won’t work for all dates.

    PS. OS X behaves this way, on Linux there aren’t any leading spaces.


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