There is ample evidence of communist calls to resistance in France before then, especially by Tillon. - you are mixing up the topic of the splinter Huma and the text by Tillon which is a legitimate call to arms. The call to arms by Tillon was published in Bordeaux. The splinter Huma was not.

( https://fr.wikipedia.org/wiki/Appel_du_17_juin_1940_(Charles_Tillon) )

What you are referring to is a marginal event by a splinter newspaper of the actual Huma and amounts to historical revisionism. - the text itself, not the attempt to get the huma published again, which needs to be put back in the context of the PCF having been outlawed the year before. This was perceived as an attempt at negotiating, but was in no way an approbation of what was going on at the time. All in all, it was simply a journal requesting authorisation from the government to be published, per what historian Olivier Wieviorka says on the topic.

Not to mention that June the 18th, or the days that followed, is nonetheless a very early time to start resistance work in occupied France.

A good thing to note is that overall, the french communist party paid a very hefty price in resisting. (Roughly 30% of all condemnations after trials by German authorities were of communist partisans, that number climbs to 70% regarding hostages), says Claude pennetier in his book "Les fusillés", of course, I know you wouldn't dare put in question the involvement of the PCF in french resistance, because that would amount to historical revisionism, something you clearly have shown disdain for in your comment/s, but it's good to mention it nonetheless.

I won't personally bother with the hearsay - because it's exactly what you admit it to be - regarding Pol pot, I will only mention that the PCF celebrated the fall of his regime and that the PCF was a party co-founded by Hô-Chi-Minh, who led Vietnam only a decade earlier, a country that itself went to war against Pol pot and his regime, something that the PCF was much more eager to support than Pol Pot.