accentchar: a command-line utility to apply Russian stress marks

I’ve written a lot about applying and removing syllabic stress marks in Russian text because I use it a lot when making Anki cards. This iteration is a command line tool for applying the stress mark at a particular character index. The advantage of these little shell tools is that they can be composable, integrating into different tools as the need arises. #!/usr/local/bin/zsh while getopts i:w: flag do case "${flag}" in i) index=${OPTARG};; w) word=${OPTARG};; esac done if [ $word ]; then temp=$word else read temp fi outword="" for (( i=0; i<${#temp}; i++ )); do thischar="${temp:$i:1}" if [ $i -eq $index ]; then thischar=$(echo $thischar | perl -C -pe 's/(.