'git stash' in one subfolder fails because some other subfolder has unmerged files

Here is the log:

[yuri@yv /usr/ports/audio/giada]$ git stash push -m "audio/giada: Update 
to 0.26.0 has run-time issues" -- /usr/ports/audio/gia
da
audio/triceratops-lv2/Makefile: needs merge
audio/triceratops-lv2/pkg-descr: needs merge
audio/triceratops-lv2/pkg-plist: needs merge
science/py-dftbplus/Makefile: needs merge
science/py-dftbplus/distinfo: needs merge
science/py-dftbplus/pkg-descr: needs merge






I asked git to stash only the audio/giada subfolder. Unmerged files in 
science/py-dftbplus and audio/triceratops-lv2 shouldn't prevent stashing 
files in audio/giada.







I believe that this is a bug.







Thanks,
Yuri