Get the XML opening tag
Examples
check_empty_beautier_folder()
# my_tag
get_xml_opening_tag("<my_tag text=something/>")
#> [1] "my_tag"
# NA when there is no opening tag
get_xml_opening_tag("no_xml")
#> [1] NA
check_empty_beautier_folder()
Get the XML opening tag
check_empty_beautier_folder()
# my_tag
get_xml_opening_tag("<my_tag text=something/>")
#> [1] "my_tag"
# NA when there is no opening tag
get_xml_opening_tag("no_xml")
#> [1] NA
check_empty_beautier_folder()