This internal function takes a string of comma-separated values and converts it into a character vector. It is used to process user inputs from the Shiny app's UI, particularly when these inputs need to be retained as character data.
text_to_char_vector(text_input)A character vector converted from the comma-separated string. If the input is an empty string or consists only of whitespace, returns an empty character vector.
A string containing comma-separated values, typically user input from the Shiny app's UI. The function trims leading and trailing whitespace before processing.