Justin Tobler 86ebf870b9 gpg-interface: allow sign_buffer() to use default signing key ...

The `sign_commit_to_strbuf()` helper in "commit.c" provides fallback
logic to get the default configured signing key when a key is not
provided and handles generating the commit signature accordingly. This
signing operation is not really specific to commits as any arbitrary
buffer can be signed. Also, in a subsequent commit, this same logic is
reused by git-fast-import(1) when signing commits with invalid
signatures.

Remove the `sign_commit_to_strbuf()` helper from "commit.c" and extend
`sign_buffer()` in "gpg-interface.c" to support using the default key as
a fallback when the `SIGN_BUFFER_USE_DEFAULT_KEY` flag is provided. Call
sites are updated accordingly.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2026-03-12 21:28:20 -07:00

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