Problem using SSH key signing

[IceflowRE]

$ git commit --allow-empty --file="C:\Users\icefl\AppData\Local\Temp\tmpqrnmv2.tmp" 

error: Load key "C:/Users/icefl/.ssh/iceflower_signing": incorrect passphrase supplied to decrypt private key?

fatal: failed to write commit object

It does ask for a passphrase, i type (paste) it and i get the message above.
if i run the command git commit --allow-empty in the git directory, it also asks for the passphrase and it works. So i guess this is on SourceGit's side.

.gitconf

[user]
	signingkey = C:/Users/icefl/.ssh/iceflower_signing
[commit]
	gpgSign = true
[gpg]
	program = C:\\Program Files\\GnuPG\\bin\\gpg.exe
	format = ssh
[core]
	sshCommand = C:/Windows/System32/OpenSSH/ssh.exe
[gpg "ssh"]
	allowedSignersFile = C:/Users/icefl/.ssh/allowed_signers

Sidenote:

if i add the key with ssh-add ~/.ssh/iceflower_signing, it does not ask for a passphrase in sourcegit and it works flawless.

[love-linger]

try to remove gpg.program settings or change it to gpg.opengp.program

[love-linger]

I also enabled gpg sign (and also use format ssh). I can not reproduce this issue on Windows

[IceflowRE]

@love-linger Thanks for the replies!
I think i found the issue. I use special characters (umlaute or , non ASCI characters, e.g. in germany äöüß or in french êéè (accents) are common. SourceGit fails as soon as one of these is in the passphrase.

Note:
It is the SourceGit Askpass who asks for the passphrase.

[love-linger]

#2293