Accented character problem

[sachsmc]

Test case

If I issue the following call, I get document count == 0
clinicaltrials_count("Valérie Fonteyne")

However, if I change the "é" to a non-accented "e", I get a document count == 4
clinicaltrials_count("Valerie Fonteyne")

If I go to ClinicalTrials.gov web site and manually search for "Valérie Fonteyne", I get the correct 4 clinical trials, eg the same trials as when I download trials based on non-accented Valerie ("NCT01921803" "NCT02397434" "NCT02745587" "NCT02748200")

Same thing if I use "Véronique D'Hondt" (she has 7 documents).

Potential issue
I noticed how you call the clinicaltrials.gov API using the httr::GET() call, and I wonder if the problem is in how the call is made.

Potential fix
After some testing, I used the following call, which returns my 4 trials (it also works perfect with "Véronique D'Hondt").
The main difference is that I use the query=list....

result <- httr::GET(query_url, query=list(
term="("Valérie Fonteyne") AND cancer",
lup_s="01/1/1900",
studyxml="true"
), httr::write_disk(tmpzip, overwrite=T))