[PATCH] Enable setting attach in .gitconfig for git-format-patch.

[Jeremy White <jwhite@codeweavers.com>]

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In an attempt to keep us Thunderbird users from embarrassing ourselves.

Signed-off-by: Jeremy White <jwhite@codeweavers.com>
---
  Documentation/git-format-patch.txt |    4 +++-
  builtin-log.c                      |   15 +++++++++++++++
  2 files changed, 18 insertions(+), 1 deletions(-)



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diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index 11a7d77..2e8e94e 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -174,7 +174,8 @@ CONFIGURATION
 -------------
 You can specify extra mail header lines to be added to each message
 in the repository configuration, new defaults for the subject prefix
-and file suffix, and number patches when outputting more than one.
+and file suffix, control attachements, and number patches when outputting
+more than one.
 
 ------------
 [format]
@@ -183,6 +184,7 @@ and file suffix, and number patches when outputting more than one.
 	suffix = .txt
 	numbered = auto
 	cc = <email>
+	attach [ = mime-boundary-string ]
 ------------
 
 
diff --git a/builtin-log.c b/builtin-log.c
index 2ae39af..1a8adde 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -428,6 +428,8 @@ static const char *fmt_patch_suffix = ".patch";
 static int numbered = 0;
 static int auto_number = 1;
 
+static char *extra_attach = NULL;
+
 static char **extra_hdr;
 static int extra_hdr_nr;
 static int extra_hdr_alloc;
@@ -488,6 +490,14 @@ static int git_format_config(const char *var, const char *value, void *cb)
 		auto_number = auto_number && numbered;
 		return 0;
 	}
+	if (!strcmp(var, "format.attach")) {
+		if (value && strlen(value) > 0)
+			extra_attach = xstrdup(value);
+		else
+			extra_attach = xstrdup(git_version_string);
+		return 0;
+	}
+
 
 	return git_log_config(var, value, cb);
 }
@@ -787,6 +797,11 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 
 	rev.subject_prefix = fmt_patch_subject_prefix;
 
+	if (extra_attach) {
+		rev.mime_boundary = extra_attach;
+		rev.no_inline = 1;
+	}
+
 	/*
 	 * Parse the arguments before setup_revisions(), or something
 	 * like "git format-patch -o a123 HEAD^.." may fail; a123 is