Revision 130fcca63fe8e7e087e7419907e018cbbaf434a3 authored by Junio C Hamano on 05 February 2006, 08:07:44 UTC, committed by Junio C Hamano on 07 February 2006, 07:20:32 UTC
- "git commit" without _any_ parameter keeps the traditional behaviour. It commits the current index. We commit the whole index even when this form is run from a subdirectory. - "git commit --include paths..." (or "git commit -i paths...") is equivalent to: git update-index --remove paths... git commit - "git commit paths..." acquires a new semantics. This is an incompatible change that needs user training, which I am still a bit reluctant to swallow, but enough people seem to have complained that it is confusing to them. It 1. refuses to run if $GIT_DIR/MERGE_HEAD exists, and reminds trained git users that the traditional semantics now needs -i flag. 2. refuses to run if named paths... are different in HEAD and the index (ditto about reminding). Added paths are OK. 3. reads HEAD commit into a temporary index file. 4. updates named paths... from the working tree in this temporary index. 5. does the same updates of the paths... from the working tree to the real index. 6. makes a commit using the temporary index that has the current HEAD as the parent, and updates the HEAD with this new commit. - "git commit --all" can run from a subdirectory, but it updates the index with all the modified files and does a whole tree commit. - In all cases, when the command decides not to create a new commit, the index is left as it was before the command is run. This means that the two "git diff" in the following sequence: $ git diff $ git commit -a $ git diff would show the same diff if you abort the commit process by making the commit log message empty. This commit also introduces much requested --author option. $ git commit --author 'A U Thor <author@example.com>' Signed-off-by: Junio C Hamano <junkio@cox.net>
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delta.h
#ifndef DELTA_H
#define DELTA_H
/* handling of delta buffers */
extern void *diff_delta(void *from_buf, unsigned long from_size,
void *to_buf, unsigned long to_size,
unsigned long *delta_size, unsigned long max_size);
extern void *patch_delta(void *src_buf, unsigned long src_size,
void *delta_buf, unsigned long delta_size,
unsigned long *dst_size);
/* the smallest possible delta size is 4 bytes */
#define DELTA_SIZE_MIN 4
/*
* This must be called twice on the delta data buffer, first to get the
* expected reference buffer size, and again to get the result buffer size.
*/
static inline unsigned long get_delta_hdr_size(const unsigned char **datap)
{
const unsigned char *data = *datap;
unsigned char cmd = *data++;
unsigned long size = cmd & ~0x80;
int i = 7;
while (cmd & 0x80) {
cmd = *data++;
size |= (cmd & ~0x80) << i;
i += 7;
}
*datap = data;
return size;
}
#endif
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