Please, here in the USA, using breasts the way nature intended is considered indecent exposure and women are frequently ridiculed, threatened or expected/forced to use public bathrooms or cover the nursling's head and face with a blanket lest someone see a breast being used for it's intended purpose.
Just for you

(rougly translated)
"Article R4138-4" "Code de la défense" : A female military could ask to be "off duty" to be able oh nursling
"Article L1225-30" "Code du Travail" : For one year, after the birth, a nursling worker is given 1 hour/day on her working time for nursling (probably cumulated time). Theorically it is payed time (according to a 1912 law).
found 29 different law about "nursling" but only related to "nursling at work", specific area (separated from working area) for this purpose, resting ect. But nothing in the "Civile Code" (mainly the all day life law) or the "Pénal Code" (the big stick) about that. So you are free to "give breast" to your kid everywhere (even public place) until :
- you are not totaly topless and shaking your nipples like a gogo dancer in front of a police station
i think it is the only conditions for being able to nursling in public
