We fail to release the memory for the nodes. To fix it however, we some consumer of the commit graph iterator need to be corrected: the returned pointer is safe to be used only up until the next iter_next call; save a copy it if it's needed afterwards too. ok stsp@

Not everywhere getline does an implicit fflush, so we might end up not showing the prompt to the user. Spotted on alpine with muslc. ok Thomas Adams

ok jrick

ok stsp@

We already have two arguments when diffing two blobs, so check for more than two like we do when diffing two objects to check for invalid path args. Includes new regress test by op for diffing two blobs. ok stsp@ and ok plus regress test from op@

spotted by noticing gotwebd crashing on some blame requests. Diff from stsp@ with a fix from tracey@, I'm committing it only because he is short on time. ok stsp@

follow the "proper secure idiom" described in the CAVEATS section of printf(3). reminded by tb@ and millert@

patch by Josiah Frentsos

got_error_path uses get_custom_err to get a statically allocated error allocated on a buffer that's used a ring. This is nice and simple, but the drawback is that thees custom errors shouldn't be used "for too long" because they might get overwritten later. cmd_info is one offender: change it to store a "simple" error and later re-use it to construct the per-path error. OK and tweaks stsp@

found by jrick

Add () and {} key maps to navigate to the previous and next file or hunk in the diff. This required changing Got's diff API to collect line type metadata in addition to the line offsets already produced as prompted by stsp. ok stsp@

it's useful for e.g. to apply old patches that weren't generated by `got diff' or git-diff(1) and so lacks the metadata needed for the 3-way merge. manpage improvements from and ok stsp@

ok stsp@