When a string, used as old_text for SUBSTITUTE(text, old_text, new_text, [instance_num]) function, is repeated more than once and the new_text is an empty string, one occurrence of the old_text remains not substituted.
ab113abababab11ab
in A1=SUBSTITUTE(A1, "ab", "")
NOTE: substituting ab
with another string, e.g. cd
, replaces all instances of ab
as expected.
113ab11
- when ab is repeated more than once in a row, one of its instances remains unchanged to an empty string
11311