@@ -218,12 +218,17 @@ impl<'a> DisplayList<'a> {
218218 } else {
219219 false
220220 } ;
221+ // Specifies that it will end on the next character, so it will return
222+ // until the next one to the final condition.
221223 let mut ended = false ;
222224 let range = text
223225 . char_indices ( )
224- . chain ( once ( ( text. len ( ) , '0円' ) ) )
225226 . skip ( left)
227+ // Complete char iterator with final character
228+ . chain ( once ( ( text. len ( ) , '0円' ) ) )
229+ // Take until the next one to the final condition
226230 . take_while ( |( _, ch) | {
231+ // Fast return to iterate over final byte position
227232 if ended {
228233 return false ;
229234 }
@@ -236,6 +241,7 @@ impl<'a> DisplayList<'a> {
236241 }
237242 true
238243 } )
244+ // Reduce to start and end byte position
239245 . fold ( ( None , 0 ) , |acc, ( i, _) | {
240246 if acc. 0 . is_some ( ) {
241247 ( acc. 0 , i)
@@ -244,6 +250,7 @@ impl<'a> DisplayList<'a> {
244250 }
245251 } ) ;
246252
253+ // Format text with margins
247254 text[ range. 0 . expect ( "One character at line" ) ..range. 1 ] . fmt ( f) ?;
248255
249256 if cut_right {
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