'Different utf8 encoding in filenames os x

I have a small shellscript in .x

$ cat .x
u="Böhmáí"
touch "$u"
ls > .list
echo "$u" >.text

cat .list .text
diff .list .text
od -bc .list
od -bc .text

When i run this scrpit sh -x .x (-x only for showing commands)

$ sh -x .x
+ u=Böhmáí
+ touch Böhmáí
+ ls
+ echo Böhmáí
+ cat .list .text
Böhmáí
Böhmáí
+ diff .list .text
1c1
< Böhmáí
---
> Böhmáí
+ od -bc .list
0000000   102 157 314 210 150 155 141 314 201 151 314 201 012            
           B   o   ̈    **   h   m   a   ́    **   i   ́    **  \n            
0000015
+ od -bc .text
0000000   102 303 266 150 155 303 241 303 255 012                        
           B   ö  **   h   m   á  **   í  **  \n                        
0000012

The same string Böhmáí has encoded into different bytes in the filename vs as a content of a file. In the terminal (utf8-encoded) the string looks same in both variants.

Where is the rabbit?

macosencodingutf-8filesystems


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