On French keyboard, the numbers 0-9 and special chars (#$&@...) are swapped, so you need "shift+<num>" to type in a number. Effect on the web compat:
A phone number validator on French lowcost railway website was built/tested with French keyboard only; they were checking input codes in JS on each keypress and only allowing the presses of certain keys with shift enabled. Since you can't type a number on QWERTY with shift enabled, I was unable to complete the form until I realized what's up by reading the JS and switched to AZERTY layout.
(copy-pasting into the input didn't work either)
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Unrelated aside: as I was raised in Poland which is based on US QWERTY and all programs using US shortcuts (with the only quirk being AltGr mentioned in other comments), I was mind blown than in other countries it's customary to localize shortcuts.
For example in Spain in notepad.exe, save is not CTRL-S but CTRL-G ("guardar").
In France, you don't bold in Excel with CTRL-B, you bold with CTRL-G ("grossir"). For some reason Excel online only lets me use the FR version despite settungs all possible locale settings to en and this drives me nuts.
On French keyboard, the numbers 0-9 and special chars (#$&@...) are swapped, so you need "shift+<num>" to type in a number. Effect on the web compat:
A phone number validator on French lowcost railway website was built/tested with French keyboard only; they were checking input codes in JS on each keypress and only allowing the presses of certain keys with shift enabled. Since you can't type a number on QWERTY with shift enabled, I was unable to complete the form until I realized what's up by reading the JS and switched to AZERTY layout.
(copy-pasting into the input didn't work either)
---
Unrelated aside: as I was raised in Poland which is based on US QWERTY and all programs using US shortcuts (with the only quirk being AltGr mentioned in other comments), I was mind blown than in other countries it's customary to localize shortcuts.
For example in Spain in notepad.exe, save is not CTRL-S but CTRL-G ("guardar").
In France, you don't bold in Excel with CTRL-B, you bold with CTRL-G ("grossir"). For some reason Excel online only lets me use the FR version despite settungs all possible locale settings to en and this drives me nuts.