After base::merge(), all non-id columns that were present in x and y
do get a suffix .x and .y. If the y value is missing, use the x
value (because the information for this token was not stylerignored),
otherwise the y value (i.e. the styled value).
stylerignore_consolidate_col(flattened_pd, col)A flattened parse table.
A string indicating the name of the column that should be consolidated.