pub fn split_alt_width(text: &str) -> (String, Option<String>)Expand description
Split pipe-delimited alt/alias text into (remaining, width).
Pulls out the FIRST segment that parse_image_width recognizes; all
other segments are rejoined with | in order. If no segment is a
width, returns the input unchanged with None. Mirrors the segment
model of extract_width_from_alias but for the image width vocabulary
(named + percent).