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Merge branch 'nr/git-cd-to-a-directory'

Just like "make -C <directory>", make "git -C <directory> ..." to
go there before doing anything else.

* nr/git-cd-to-a-directory:
  t0056: "git -C" test updates
  git: run in a directory given with -C option
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2 parents f26f250 + 28a81f8 commit 087350398e8b2c5d4b39f051b23a2e533f4d830b @gitster gitster committed
Showing with 111 additions and 2 deletions.
  1. +15 −1 Documentation/git.txt
  2. +12 −1 git.c
  3. +84 −0 t/t0056-git-C.sh
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16 Documentation/git.txt
@@ -9,7 +9,7 @@ git - the stupid content tracker
SYNOPSIS
--------
[verse]
-'git' [--version] [--help] [-c <name>=<value>]
+'git' [--version] [--help] [-C <path>] [-c <name>=<value>]
[--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
[-p|--paginate|--no-pager] [--no-replace-objects] [--bare]
[--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
@@ -395,6 +395,20 @@ displayed. See linkgit:git-help[1] for more information,
because `git --help ...` is converted internally into `git
help ...`.
+-C <path>::
+ Run as if git was started in '<path>' instead of the current working
+ directory. When multiple `-C` options are given, each subsequent
+ non-absolute `-C <path>` is interpreted relative to the preceding `-C
+ <path>`.
++
+This option affects options that expect path name like `--git-dir` and
+`--work-tree` in that their interpretations of the path names would be
+made relative to the working directory caused by the `-C` option. For
+example the following invocations are equivalent:
+
+ git --git-dir=a.git --work-tree=b -C c status
+ git --git-dir=c/a.git --work-tree=c/b status
+
-c <name>=<value>::
Pass a configuration parameter to the command. The value
given will override values from configuration files.
View
13 git.c
@@ -7,7 +7,7 @@
#include "commit.h"
const char git_usage_string[] =
- "git [--version] [--help] [-c name=value]\n"
+ "git [--version] [--help] [-C <path>] [-c name=value]\n"
" [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n"
" [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]\n"
" [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n"
@@ -165,6 +165,17 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
set_alternate_shallow_file((*argv)[0]);
if (envchanged)
*envchanged = 1;
+ } else if (!strcmp(cmd, "-C")) {
+ if (*argc < 2) {
+ fprintf(stderr, "No directory given for -C.\n" );
+ usage(git_usage_string);
+ }
+ if (chdir((*argv)[1]))
+ die_errno("Cannot change to '%s'", (*argv)[1]);
+ if (envchanged)
+ *envchanged = 1;
+ (*argv)++;
+ (*argc)--;
} else {
fprintf(stderr, "Unknown option: %s\n", cmd);
usage(git_usage_string);
View
84 t/t0056-git-C.sh
@@ -0,0 +1,84 @@
+#!/bin/sh
+
+test_description='"-C <path>" option and its effects on other path-related options'
+
+. ./test-lib.sh
+
+test_expect_success '"git -C <path>" runs git from the directory <path>' '
+ test_create_repo dir1 &&
+ echo 1 >dir1/a.txt &&
+ msg="initial in dir1" &&
+ (cd dir1 && git add a.txt && git commit -m "$msg") &&
+ echo "$msg" >expected &&
+ git -C dir1 log --format=%s >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Multiple -C options: "-C dir1 -C dir2" is equivalent to "-C dir1/dir2"' '
+ test_create_repo dir1/dir2 &&
+ echo 1 >dir1/dir2/b.txt &&
+ git -C dir1/dir2 add b.txt &&
+ msg="initial in dir1/dir2" &&
+ echo "$msg" >expected &&
+ git -C dir1/dir2 commit -m "$msg" &&
+ git -C dir1 -C dir2 log --format=%s >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Effect on --git-dir option: "-C c --git-dir=a.git" is equivalent to "--git-dir c/a.git"' '
+ mkdir c &&
+ mkdir c/a &&
+ mkdir c/a.git &&
+ (cd c/a.git && git init --bare) &&
+ echo 1 >c/a/a.txt &&
+ git --git-dir c/a.git --work-tree=c/a add a.txt &&
+ git --git-dir c/a.git --work-tree=c/a commit -m "initial" &&
+ git --git-dir=c/a.git log -1 --format=%s >expected &&
+ git -C c --git-dir=a.git log -1 --format=%s >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Order should not matter: "--git-dir=a.git -C c" is equivalent to "-C c --git-dir=a.git"' '
+ git -C c --git-dir=a.git log -1 --format=%s >expected &&
+ git --git-dir=a.git -C c log -1 --format=%s >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Effect on --work-tree option: "-C c/a.git --work-tree=../a" is equivalent to "--work-tree=c/a --git-dir=c/a.git"' '
+ rm c/a/a.txt &&
+ git --git-dir=c/a.git --work-tree=c/a status >expected &&
+ git -C c/a.git --work-tree=../a status >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Order should not matter: "--work-tree=../a -C c/a.git" is equivalent to "-C c/a.git --work-tree=../a"' '
+ git -C c/a.git --work-tree=../a status >expected &&
+ git --work-tree=../a -C c/a.git status >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Effect on --git-dir and --work-tree options - "-C c --git-dir=a.git --work-tree=a" is equivalent to "--git-dir=c/a.git --work-tree=c/a"' '
+ git --git-dir=c/a.git --work-tree=c/a status >expected &&
+ git -C c --git-dir=a.git --work-tree=a status >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Order should not matter: "-C c --git-dir=a.git --work-tree=a" is equivalent to "--git-dir=a.git -C c --work-tree=a"' '
+ git -C c --git-dir=a.git --work-tree=a status >expected &&
+ git --git-dir=a.git -C c --work-tree=a status >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Order should not matter: "-C c --git-dir=a.git --work-tree=a" is equivalent to "--git-dir=a.git --work-tree=a -C c"' '
+ git -C c --git-dir=a.git --work-tree=a status >expected &&
+ git --git-dir=a.git --work-tree=a -C c status >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'Relative followed by fullpath: "-C ./here -C /there" is equivalent to "-C /there"' '
+ echo "initial in dir1/dir2" >expected &&
+ git -C dir1 -C "$(pwd)/dir1/dir2" log --format=%s >actual &&
+ test_cmp expected actual
+'
+
+test_done

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