sed -i -E "s/еж([аиу][^а-я])/ёжик\1/g" *ru*
grep -E "еж[аиу][^а-я]" *ru*
Comment: [^а-я] includes all spaces and punctuation and also finish of string
#!/bin/sh -
# Script to update all frontend locale files.
# HOW TO USE:
# - Run this script in the tools/ directory.
# Result: All .ts files in share/hedgewars/Data/Locale will be updated.
lupdate ../QTfrontend -ts ../share/hedgewars/Data/Locale/hedgewars_*.ts