Comment on Bet you didn't know that before Excel, people used Lotus 1-2-3

mercano@lemmy.world ⁨2⁩ ⁨days⁩ ago

There’s a long-standing bug in Excel, dating back to the original release, where it thinks 1900 is a leap year. This isn’t a mistake, though, Microsoft coded it this way because Lotus 1-2-3 thought 1900 was a leap year, and they wanted to be compatible so they could import Lotus spread sheets. However, by doing this, they locked themselves in, and they need to continue to have this bug even today to be compatible with old Excel spreadsheets.

…medium.com/the-100-year-bug-microsoft-never-fixe…

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