Question

Is it possible to use corresponding or operators (|) in the match and substitution strings of a regex substitution, such that a list of different possible matches is replaced by a corresponding list of different substitution strings? For instance,

perl -e '$str="word1"; $str=~s/1/2/; print $str."\n"'
  word2
perl -e '$str="word3"; $str=~s/3/4/; print $str."\n"'
  word4

perl -e '$str="word1"; $str=~s/1|3/2|4/; print $str."\n"'
  word2          (actual output: word2|4)
perl -e '$str="word3"; $str=~s/1|3/2|4/; print $str."\n"'
  word4          (actual output: word2|4)

The last two statements give fictitious (desired) output (the real output is shown in parentheses).

Answer 1

Credits go to user mu is too short.

Regular expression substitution using multiple matched input patterns and output strings is achieved in Matlab as shown in the following example.

str_match = cell(2,1); str_match{1}='1'; str_match{2}='3';
str_sub = cell(2,1); str_sub{1}='2'; str_sub{2}='4';
regexprep('word1',str_match,str_sub)
    ans = word2
regexprep('word3',str_match,str_sub)
    ans = word4