• Jonathan Nieder's avatar
    fast-import: introduce "feature notes" command · 547e8b92
    Jonathan Nieder authored
    Here is a 'feature' command for streams to use to require support for
    the notemodify (N) command.
    
    When the 'feature' facility was introduced (v1.7.0-rc0~95^2~4,
    2009-12-04), the notes import feature was old news (v1.6.6-rc0~21^2~8,
    2009-10-09) and it was not obvious it deserved to be a named feature.
    But now that is clear, since all major non-git fast-import backends
    lack support for it.
    
    Details: on git version with this patch applied, any "feature notes"
    command in the features/options section at the beginning of a stream
    will be treated as a no-op.  On fast-import implementations without
    the feature (and older git versions), the command instead errors out
    with a message like
    
    	This version of fast-import does not support feature notes.
    
    So by declaring use of notes at the beginning of a stream, frontends
    can avoid wasting time and other resources when the backend does not
    support notes.  (This would be especially important for backends that
    do not support rewinding history after a botched import.)
    Improved-by: default avatarThomas Rast <[email protected]>
    Improved-by: default avatarSverre Rabbelier <[email protected]>
    Signed-off-by: default avatarJonathan Nieder <[email protected]>
    Signed-off-by: default avatarJunio C Hamano <[email protected]>
    547e8b92
git-fast-import.txt 46.7 KB