use a hash of the lock token as the suffix for PUT/MOVE
After 753bc911 ("Remove the requirement opaquelocktoken uri scheme"), lock tokens are in the URI forms in which they are received from the server, eg. 'opaquelocktoken:', 'urn:uuid:'. However, "start_put" (and consequently "start_move"), which attempts to create a unique temporary file using the UUID of the lock token, inadvertently uses the lock token in its URI form. These file operations on the server may not be successful (specifically, in Windows), due to the colon ':' character from the URI form of the lock token in the file path. This patch uses a hash of the lock token instead, guaranteeing only "safe" characters (a-f, 0-9) are used in the file path. The token's hash is generated when the lock token is received from the server in handle_new_lock_ctx, minimizing the number of times of hashing. Signed-off-by: NTay Ray Chuan <rctay89@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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