According to the French press, back on Feb 2
The members of the Social Affairs commission had been meeting since Monday morning to examine the government’s proposed pension reform and the 7,000 amendments proposed by the opposition.
By Wednesday evening's deadline, they had gone through two articles and not reached article 7, the key part of the reform, that proposes raising the minimum retirement age from 62 to 64 years old.
A few minutes before the 8 pm deadline, with 4,997 amendments left, commission president Fadila Khattabi, of President Emmanuel Macron’s Renaissance party, ended the session with “regret” that most of the text had not been examined, despite 28 hours of debate.
But that article doesn't provide any comparative context for that 7,000 amendments number. And TBH I'm not sure if it's the correct/final number, because PBS more briefly reported on Feb 6 that on that same law:
More than 20,000 amendments have been proposed by opposition lawmakers — mostly by the left-wing Nupes coalition.
So, is it a record or was there a law proposal with more amendments introduced? (Let's say since 1958, because the French parliament seems to [nowadays] report stats only beginning with this date, when the 5th French Republic officially commenced.)