Demonstrates an issue in SMB + macOS when having files with decomposed characters on a shared Linux volume

create_files_with_unicode_composition_differences.sh

#!/bin/bash
#
# This script demonstrates an issue with SMB (and probably AFP as well)
# sharing, when accessing files by macOS that are hosted on a Linux share.
#
# Run this script on a Linux system to create two file in the current dir.
# Make sure it runs in bash, not sh, or the codes won't work.
#
# Make the generated files acessible via SMB, then try to access both files
# from macOS. The one called "decomposed_ü" won't be accessible - that's the bug.

# decomposed ü (u+¨):
ue_decomp=$'u\xCC\x88'
# precomposed ü:
ue_precomp=$'\xC3\xBC'
#echo $ue_decomp
#echo $ue_precomp

# create two files with the different compositions
echo "${ue_decomp} (decomposed)\c" > decomposed_${ue_decomp}
echo "${ue_precomp} (precomposed)\c" > precomposed_${ue_precomp}