pretty: give placeholders to reflog identity

When doing a reflog walk, you can get some information about
the reflog (such as the subject line), but not the identity
information (i.e., name and email).

Let's make those available, mimicing the options for author
and committer identity.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt
index 561cc9f7d7ef1a2502d608e59e2eae345bffd685..880b6f2e6f946ab6fc0ff4850759908364d50854 100644 (file)
--- a/Documentation/pretty-formats.txt
+++ b/Documentation/pretty-formats.txt
@@ -132,6 +132,10 @@ The placeholders are:
 - '%N': commit notes
 - '%gD': reflog selector, e.g., `refs/stash@\{1\}`
 - '%gd': shortened reflog selector, e.g., `stash@\{1\}`
+- '%gn': reflog identity name
+- '%gN': reflog identity name (respecting .mailmap, see linkgit:git-shortlog[1] or linkgit:git-blame[1])
+- '%ge': reflog identity email
+- '%gE': reflog identity email (respecting .mailmap, see linkgit:git-shortlog[1] or linkgit:git-blame[1])
 - '%gs': reflog subject
 - '%Cred': switch color to red
 - '%Cgreen': switch color to green

diff --git a/pretty.c b/pretty.c
index 230fe1cc82e3a3bf7c0fef604350868d917acef4..1580299d4037ada9e1f0e3c11c6c5578f44f52dd 100644 (file)
--- a/pretty.c
+++ b/pretty.c
@@ -822,6 +822,23 @@ static void rewrap_message_tail(struct strbuf *sb,
        c->indent2 = new_indent2;
 }
 
+static int format_reflog_person(struct strbuf *sb,
+                               char part,
+                               struct reflog_walk_info *log,
+                               enum date_mode dmode)
+{
+       const char *ident;
+
+       if (!log)
+               return 2;
+
+       ident = get_reflog_ident(log);
+       if (!ident)
+               return 2;
+
+       return format_person_part(sb, part, ident, strlen(ident), dmode);
+}
+
 static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
                                void *context)
 {
@@ -963,6 +980,14 @@ static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
                        if (c->pretty_ctx->reflog_info)
                                get_reflog_message(sb, c->pretty_ctx->reflog_info);
                        return 2;
+               case 'n':
+               case 'N':
+               case 'e':
+               case 'E':
+                       return format_reflog_person(sb,
+                                                   placeholder[1],
+                                                   c->pretty_ctx->reflog_info,
+                                                   c->pretty_ctx->date_mode);
                }
                return 0;       /* unknown %g placeholder */
        case 'N':

diff --git a/reflog-walk.c b/reflog-walk.c
index 5d81d39a525830f6bacba88143ab6a4552748441..590737e844b84a7b15881159c271423661623828 100644 (file)
--- a/reflog-walk.c
+++ b/reflog-walk.c
@@ -291,6 +291,18 @@ void get_reflog_message(struct strbuf *sb,
        strbuf_add(sb, info->message, len);
 }
 
+const char *get_reflog_ident(struct reflog_walk_info *reflog_info)
+{
+       struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
+       struct reflog_info *info;
+
+       if (!commit_reflog)
+               return NULL;
+
+       info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
+       return info->email;
+}
+
 void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
        enum date_mode dmode)
 {

diff --git a/reflog-walk.h b/reflog-walk.h
index 7bd2cd4c4e5cd9d51e645509eeacc49a83a44ba7..afb1ae3fde93a5c61def211be56b0554a25dd45e 100644 (file)
--- a/reflog-walk.h
+++ b/reflog-walk.h
@@ -14,6 +14,7 @@ extern void show_reflog_message(struct reflog_walk_info *info, int,
                enum date_mode);
 extern void get_reflog_message(struct strbuf *sb,
                struct reflog_walk_info *reflog_info);
+extern const char *get_reflog_ident(struct reflog_walk_info *reflog_info);
 extern void get_reflog_selector(struct strbuf *sb,
                struct reflog_walk_info *reflog_info,
                enum date_mode dmode,

diff --git a/t/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh
index d918cc02d090157485d404d34d49005e50cd9f1a..444279077e803ca96e48281ae956ea6536317608 100755 (executable)
--- a/t/t6006-rev-list-format.sh
+++ b/t/t6006-rev-list-format.sh
@@ -267,6 +267,12 @@ test_expect_success '%gd shortens ref name' '
        test_cmp expect.gd-short actual.gd-short
 '
 
+test_expect_success 'reflog identity' '
+       echo "C O Mitter:committer@example.com" >expect &&
+       git log -g -1 --format="%gn:%ge" >actual &&
+       test_cmp expect actual
+'
+
 test_expect_success 'oneline with empty message' '
        git commit -m "dummy" --allow-empty &&
        git commit -m "dummy" --allow-empty &&