regexptranslate
regexptranslate('escape', exp) returns exp for which special characters have been transformed into literal characters, adding a backslash.
Examples
>> str = 'End.';% dot is a special character to match any character
regexp(str, '.')# 1 2 3 4 >> exp = regexptranslate('escape', '.')# \. >> regexp(str, exp)# 4