Documentation/git-merge-index.txt

   1 git-merge-index(1)
   2 ==================
   3
   4 NAME
   5 ----
   6 git-merge-index - Run a merge for files needing merging
   7
   8
   9 SYNOPSIS
  10 --------
  11 'git merge-index' [-o] [-q] <merge-program> (-a | [--] <file>\*)
  12
  13 DESCRIPTION
  14 -----------
  15 This looks up the <file>(s) in the index and, if there are any merge
  16 entries, passes the SHA1 hash for those files as arguments 1, 2, 3 (empty
  17 argument if no file), and <file> as argument 4.  File modes for the three
  18 files are passed as arguments 5, 6 and 7.
  19
  20 OPTIONS
  21 -------
  22 \--::
  23         Do not interpret any more arguments as options.
  24
  25 -a::
  26         Run merge against all files in the index that need merging.
  27
  28 -o::
  29         Instead of stopping at the first failed merge, do all of them
  30         in one shot - continue with merging even when previous merges
  31         returned errors, and only return the error code after all the
  32         merges are over.
  33
  34 -q::
  35         Do not complain about failed merge program (the merge program
  36         failure usually indicates conflicts during merge). This is for
  37         porcelains which might want to emit custom messages.
  38
  39 If "git-merge-index" is called with multiple <file>s (or -a) then it
  40 processes them in turn only stopping if merge returns a non-zero exit
  41 code.
  42
  43 Typically this is run with a script calling git's imitation of
  44 the merge command from the RCS package.
  45
  46 A sample script called "git-merge-one-file" is included in the
  47 distribution.
  48
  49 ALERT ALERT ALERT! The git "merge object order" is different from the
  50 RCS "merge" program merge object order. In the above ordering, the
  51 original is first. But the argument order to the 3-way merge program
  52 "merge" is to have the original in the middle. Don't ask me why.
  53
  54 Examples:
  55
  56   torvalds@ppc970:~/merge-test> git merge-index cat MM
  57   This is MM from the original tree.                    # original
  58   This is modified MM in the branch A.                  # merge1
  59   This is modified MM in the branch B.                  # merge2
  60   This is modified MM in the branch B.                  # current contents
  61
  62 or
  63
  64   torvalds@ppc970:~/merge-test> git merge-index cat AA MM
  65   cat: : No such file or directory
  66   This is added AA in the branch A.
  67   This is added AA in the branch B.
  68   This is added AA in the branch B.
  69   fatal: merge program failed
  70
  71 where the latter example shows how "git-merge-index" will stop trying to
  72 merge once anything has returned an error (i.e., "cat" returned an error
  73 for the AA file, because it didn't exist in the original, and thus
  74 "git-merge-index" didn't even try to merge the MM thing).
  75
  76 Author
  77 ------
  78 Written by Linus Torvalds <torvalds@osdl.org>
  79 One-shot merge by Petr Baudis <pasky@ucw.cz>
  80
  81 Documentation
  82 --------------
  83 Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
  84
  85 GIT
  86 ---
  87 Part of the linkgit:git[1] suite