[PATCH 0/5] Allow git log to use mailmap file

[PATCH 0/5] Allow git log to use mailmap file

[Antoine Pelisse]

Implement the feature suggested here [1] by Rich Mindwinter
and Junio C Hamano (and following his advices)

This is a pre-version so there are a bunch of things still missing,
among them:
 - There is no tests
 - Grep search for mailmap author/committer is not available
 - There is no documentation of the new option

[1]: http://thread.gmane.org/gmane.comp.version-control.git/211270

Antoine Pelisse (5):
  Use split_ident_line to parse author and committer
  mailmap: Remove buffer length limit in map_user
  mailmap: Add mailmap structure to rev_info and pp
  pretty: Use mailmap to display username and email
  log: Add --use-mailmap option

 builtin/blame.c | 59 +++++++++++++++++-------------------------------
 builtin/log.c   |  9 +++++++-
 commit.h        |  1 +
 log-tree.c      |  1 +
 mailmap.c       | 16 ++++++-------
 pretty.c        | 70 ++++++++++++++++++++++++++++++++++++---------------------
 revision.h      |  1 +
 7 files changed, 84 insertions(+), 73 deletions(-)

--
1.8.1.rc1.5.g7e0651a

[PATCH 1/5] Use split_ident_line to parse author and committer

[Antoine Pelisse]

Currently blame.c::get_acline and pretty.c::pp_user_info()
are parsing author name, email, time and tz themselves.

Use ident.c::split_ident_line for better code reuse.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
---
 builtin/blame.c | 59 ++++++++++++++++++++-------------------------------------
 pretty.c        | 32 +++++++++++++++++--------------
 2 files changed, 39 insertions(+), 52 deletions(-)

diff --git a/builtin/blame.c b/builtin/blame.c
index cfae569..dd4aff9 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -1343,8 +1343,9 @@ static void get_ac_line(const char *inbuf, const char *what,
 			int mail_len, char *mail,
 			unsigned long *time, const char **tz)
 {
-	int len, tzlen, maillen;
-	char *tmp, *endp, *timepos, *mailpos;
+	struct ident_split ident;
+	int len, tzlen, maillen, namelen;
+	char *tmp, *endp, *mailpos;
 
 	tmp = strstr(inbuf, what);
 	if (!tmp)
@@ -1355,7 +1356,10 @@ static void get_ac_line(const char *inbuf, const char *what,
 		len = strlen(tmp);
 	else
 		len = endp - tmp;
-	if (person_len <= len) {
+	if (person_len <= len)
+		goto error_out;
+
+	if (split_ident_line(&ident, tmp, len)) {
 	error_out:
 		/* Ugh */
 		*tz = "(unknown)";
@@ -1364,47 +1368,26 @@ static void get_ac_line(const char *inbuf, const char *what,
 		*time = 0;
 		return;
 	}
-	memcpy(person, tmp, len);
 
-	tmp = person;
-	tmp += len;
-	*tmp = 0;
-	while (person < tmp && *tmp != ' ')
-		tmp--;
-	if (tmp <= person)
-		goto error_out;
-	*tz = tmp+1;
-	tzlen = (person+len)-(tmp+1);
+	namelen = ident.name_end - ident.name_begin;
+	memcpy(person, ident.name_begin, namelen);
+	person[namelen] = 0;
 
-	*tmp = 0;
-	while (person < tmp && *tmp != ' ')
-		tmp--;
-	if (tmp <= person)
-		goto error_out;
-	*time = strtoul(tmp, NULL, 10);
-	timepos = tmp;
+	maillen = ident.mail_end - ident.mail_begin + 2;
+	memcpy(mail, ident.mail_begin - 1, maillen);
+	mail[maillen] = 0;
 
-	*tmp = 0;
-	while (person < tmp && !(*tmp == ' ' && tmp[1] == '<'))
-		tmp--;
-	if (tmp <= person)
-		return;
-	mailpos = tmp + 1;
-	*tmp = 0;
-	maillen = timepos - tmp;
-	memcpy(mail, mailpos, maillen);
+	*time = strtoul(ident.date_begin, NULL, 10);
 
-	if (!mailmap.nr)
-		return;
+	tzlen = ident.tz_end - ident.tz_begin;
 
-	/*
-	 * mailmap expansion may make the name longer.
-	 * make room by pushing stuff down.
-	 */
-	tmp = person + person_len - (tzlen + 1);
-	memmove(tmp, *tz, tzlen);
+	/* Place tz at the end of person */
+	*tz = tmp = person + person_len - (tzlen + 1);
+	memcpy(tmp, ident.tz_begin, tzlen);
 	tmp[tzlen] = 0;
-	*tz = tmp;
+
+	if (!mailmap.nr)
+		return;
 
 	/*
 	 * Now, convert both name and e-mail using mailmap
diff --git a/pretty.c b/pretty.c
index 5bdc2e7..6730add 100644
--- a/pretty.c
+++ b/pretty.c
@@ -387,29 +387,33 @@ void pp_user_info(const struct pretty_print_context *pp,
 		  const char *what, struct strbuf *sb,
 		  const char *line, const char *encoding)
 {
+	struct ident_split ident;
+	int linelen, namelen;
+	char *line_end, *date;
 	int max_length = 78; /* per rfc2822 */
-	char *date;
-	int namelen;
 	unsigned long time;
 	int tz;
 
 	if (pp->fmt == CMIT_FMT_ONELINE)
 		return;
-	date = strchr(line, '>');
-	if (!date)
+
+	line_end = strchr(line, '\n');
+	if (!line_end)
+		return;
+
+	linelen = ++line_end - line;
+	if (split_ident_line(&ident, line, linelen))
 		return;
-	namelen = ++date - line;
-	time = strtoul(date, &date, 10);
+
+	namelen = ident.mail_end - ident.name_begin + 1;
+	time = strtoul(ident.date_begin, &date, 10);
 	tz = strtol(date, NULL, 10);
 
 	if (pp->fmt == CMIT_FMT_EMAIL) {
-		char *name_tail = strchr(line, '<');
 		int display_name_length;
-		if (!name_tail)
-			return;
-		while (line < name_tail && isspace(name_tail[-1]))
-			name_tail--;
-		display_name_length = name_tail - line;
+
+		display_name_length = ident.name_end - ident.name_begin;
+
 		strbuf_addstr(sb, "From: ");
 		if (needs_rfc2047_encoding(line, display_name_length, RFC2047_ADDRESS)) {
 			add_rfc2047(sb, line, display_name_length,
@@ -427,10 +431,10 @@ void pp_user_info(const struct pretty_print_context *pp,
 		}
 		if (namelen - display_name_length + last_line_length(sb) > max_length) {
 			strbuf_addch(sb, '\n');
-			if (!isspace(name_tail[0]))
+			if (!isspace(ident.name_end[0]))
 				strbuf_addch(sb, ' ');
 		}
-		strbuf_add(sb, name_tail, namelen - display_name_length);
+		strbuf_add(sb, ident.name_end, namelen - display_name_length);
 		strbuf_addch(sb, '\n');
 	} else {
 		strbuf_addf(sb, "%s: %.*s%.*s\n", what,
-- 
1.8.1.rc1.5.g7e0651a

[PATCH 2/5] mailmap: Remove buffer length limit in map_user

[Antoine Pelisse]

Remove the hard limit set by mail buffer in map_user and
use the strbuf API to replace it.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
---
 mailmap.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/mailmap.c b/mailmap.c
index ea4b471..e636278 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -193,7 +193,8 @@ int map_user(struct string_list *map,
 	char *end_of_email;
 	struct string_list_item *item;
 	struct mailmap_entry *me;
-	char buf[1024], *mailbuf;
+	struct strbuf buf = STRBUF_INIT;
+	char *mailbuf;
 	int i;
 
 	/* figure out space requirement for email */
@@ -204,15 +205,13 @@ int map_user(struct string_list *map,
 		if (!end_of_email)
 			return 0;
 	}
-	if (end_of_email - email + 1 < sizeof(buf))
-		mailbuf = buf;
-	else
-		mailbuf = xmalloc(end_of_email - email + 1);
 
 	/* downcase the email address */
+	strbuf_grow(&buf, end_of_email - email);
 	for (i = 0; i < end_of_email - email; i++)
-		mailbuf[i] = tolower(email[i]);
-	mailbuf[i] = 0;
+		strbuf_addch(&buf, tolower(email[i]));
+	strbuf_addch(&buf, 0);
+	mailbuf = strbuf_detach(&buf, 0);
 
 	debug_mm("map_user: map '%s' <%s>\n", name, mailbuf);
 	item = string_list_lookup(map, mailbuf);
@@ -226,8 +225,7 @@ int map_user(struct string_list *map,
 				item = subitem;
 		}
 	}
-	if (mailbuf != buf)
-		free(mailbuf);
+	free(mailbuf);
 	if (item != NULL) {
 		struct mailmap_info *mi = (struct mailmap_info *)item->util;
 		if (mi->name == NULL && (mi->email == NULL || maxlen_email == 0)) {
-- 
1.8.1.rc1.5.g7e0651a

[PATCH 3/5] mailmap: Add mailmap structure to rev_info and pp

[Antoine Pelisse]

the mailmap string_list structure filled with mailmap
information is passed along from rev_info to pretty_print_context
to provide mailmap information to pretty print each commits
with the correct username and email.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
---
 commit.h   | 1 +
 log-tree.c | 1 +
 revision.h | 1 +
 3 files changed, 3 insertions(+)

diff --git a/commit.h b/commit.h
index b6ad8f3..7f8f987 100644
--- a/commit.h
+++ b/commit.h
@@ -89,6 +89,7 @@ struct pretty_print_context {
 	char *notes_message;
 	struct reflog_walk_info *reflog_info;
 	const char *output_encoding;
+	struct string_list *mailmap;
 };
 
 struct userformat_want {
diff --git a/log-tree.c b/log-tree.c
index 4f86def..92254fd 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -671,6 +671,7 @@ void show_log(struct rev_info *opt)
 	ctx.preserve_subject = opt->preserve_subject;
 	ctx.reflog_info = opt->reflog_info;
 	ctx.fmt = opt->commit_format;
+	ctx.mailmap = opt->mailmap;
 	pretty_print_commit(&ctx, commit, &msgbuf);
 
 	if (opt->add_signoff)
diff --git a/revision.h b/revision.h
index 059bfff..83a79f5 100644
--- a/revision.h
+++ b/revision.h
@@ -143,6 +143,7 @@ struct rev_info {
 	const char	*subject_prefix;
 	int		no_inline;
 	int		show_log_size;
+	struct string_list *mailmap;
 
 	/* Filter by commit log message */
 	struct grep_opt	grep_filter;
-- 
1.8.1.rc1.5.g7e0651a

[PATCH 4/5] pretty: Use mailmap to display username and email

[Antoine Pelisse]

Use the mailmap information to display the correct
username and email address in all log commands.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
---
 pretty.c | 46 +++++++++++++++++++++++++++++++---------------
 1 file changed, 31 insertions(+), 15 deletions(-)

diff --git a/pretty.c b/pretty.c
index 6730add..e232aaa 100644
--- a/pretty.c
+++ b/pretty.c
@@ -387,6 +387,8 @@ void pp_user_info(const struct pretty_print_context *pp,
 		  const char *what, struct strbuf *sb,
 		  const char *line, const char *encoding)
 {
+	char person_name[1024];
+	char person_mail[1024];
 	struct ident_split ident;
 	int linelen, namelen;
 	char *line_end, *date;
@@ -405,41 +407,55 @@ void pp_user_info(const struct pretty_print_context *pp,
 	if (split_ident_line(&ident, line, linelen))
 		return;
 
-	namelen = ident.mail_end - ident.name_begin + 1;
+	memcpy(person_mail, ident.mail_begin, ident.mail_end - ident.mail_begin);
+	person_mail[ident.mail_end - ident.mail_begin] = 0;
+
+	memcpy(person_name, ident.name_begin, ident.name_end - ident.name_begin);
+	person_name[ident.name_end - ident.name_begin] = 0;
+
+	if (pp->mailmap)
+		map_user(pp->mailmap, person_mail, sizeof(person_mail),
+			 person_name, sizeof(person_name));
+
+	namelen = strlen(person_name) + strlen(person_mail);
 	time = strtoul(ident.date_begin, &date, 10);
 	tz = strtol(date, NULL, 10);
 
 	if (pp->fmt == CMIT_FMT_EMAIL) {
 		int display_name_length;
 
-		display_name_length = ident.name_end - ident.name_begin;
+		display_name_length = strlen(person_name);
 
 		strbuf_addstr(sb, "From: ");
-		if (needs_rfc2047_encoding(line, display_name_length, RFC2047_ADDRESS)) {
-			add_rfc2047(sb, line, display_name_length,
+		if (needs_rfc2047_encoding(person_name, display_name_length, RFC2047_ADDRESS)) {
+			add_rfc2047(sb, person_name, display_name_length,
 						encoding, RFC2047_ADDRESS);
 			max_length = 76; /* per rfc2047 */
-		} else if (needs_rfc822_quoting(line, display_name_length)) {
+		} else if (needs_rfc822_quoting(person_name,
+						display_name_length)) {
 			struct strbuf quoted = STRBUF_INIT;
-			add_rfc822_quoted(&quoted, line, display_name_length);
+			add_rfc822_quoted(&quoted, person_name,
+					  display_name_length);
 			strbuf_add_wrapped_bytes(sb, quoted.buf, quoted.len,
 							-6, 1, max_length);
 			strbuf_release(&quoted);
 		} else {
-			strbuf_add_wrapped_bytes(sb, line, display_name_length,
-							-6, 1, max_length);
+			strbuf_add_wrapped_bytes(sb, person_name,
+						 display_name_length,
+						 -6, 1, max_length);
 		}
-		if (namelen - display_name_length + last_line_length(sb) > max_length) {
+		if (namelen - display_name_length + last_line_length(sb) > max_length)
 			strbuf_addch(sb, '\n');
-			if (!isspace(ident.name_end[0]))
-				strbuf_addch(sb, ' ');
-		}
-		strbuf_add(sb, ident.name_end, namelen - display_name_length);
+
+		strbuf_addch(sb, ' ');
+		strbuf_addch(sb, '<');
+		strbuf_add(sb, person_mail, strlen(person_mail));
+		strbuf_addch(sb, '>');
 		strbuf_addch(sb, '\n');
 	} else {
-		strbuf_addf(sb, "%s: %.*s%.*s\n", what,
+		strbuf_addf(sb, "%s: %.*s%s <%s>\n", what,
 			      (pp->fmt == CMIT_FMT_FULLER) ? 4 : 0,
-			      "    ", namelen, line);
+			    "    ", person_name, person_mail);
 	}
 	switch (pp->fmt) {
 	case CMIT_FMT_MEDIUM:
-- 
1.8.1.rc1.5.g7e0651a

Re: [PATCH 4/5] pretty: Use mailmap to display username and email

[Junio C Hamano]

Antoine Pelisse <apelisse@gmail.com> writes:

> Use the mailmap information to display the correct
> username and email address in all log commands.
>
> Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
> ---
>  pretty.c | 46 +++++++++++++++++++++++++++++++---------------
>  1 file changed, 31 insertions(+), 15 deletions(-)
>
> diff --git a/pretty.c b/pretty.c
> index 6730add..e232aaa 100644
> --- a/pretty.c
> +++ b/pretty.c
> @@ -387,6 +387,8 @@ void pp_user_info(const struct pretty_print_context *pp,
>  		  const char *what, struct strbuf *sb,
>  		  const char *line, const char *encoding)
>  {
> +	char person_name[1024];
> +	char person_mail[1024];
>  	struct ident_split ident;
>  	int linelen, namelen;
>  	char *line_end, *date;
> @@ -405,41 +407,55 @@ void pp_user_info(const struct pretty_print_context *pp,
>  	if (split_ident_line(&ident, line, linelen))
>  		return;
>  
> -	namelen = ident.mail_end - ident.name_begin + 1;
> +	memcpy(person_mail, ident.mail_begin, ident.mail_end - ident.mail_begin);
> +	person_mail[ident.mail_end - ident.mail_begin] = 0;
> +
> +	memcpy(person_name, ident.name_begin, ident.name_end - ident.name_begin);
> +	person_name[ident.name_end - ident.name_begin] = 0;
> +
> +	if (pp->mailmap)
> +		map_user(pp->mailmap, person_mail, sizeof(person_mail),
> +			 person_name, sizeof(person_name));

This is why I said that we may want to rethink the API signature of
the map_user() function.  Now this caller has the hardcoded limit
for name and mail parts, and it needs to make copies of strings into
two arrays only because map_user() expects to get two fixed-size
buffers that are to be rewritten in-place.  If we changed map_user()
to take two strbufs (one for name, the other for mail) to be updated
in place, we would still need to make copies, but later code in this
function may be able to lose a few strlen() calls.

Or it might be better to make those two strbufs output-only
parameter, e.g.

	map_user(struct string_list *mailmap,
        	const char *name, size_t namelen,
                const char *mail, size_t maillen,
                struct strbuf *name_out, struct strbuf *mail_out);

then after split_ident_line(), this caller could feed two pointers
into the original "line" as name and mail parameter, without making
any copies (the callee has to make a copy but it has to be done
anyway when the name/mail is mapped).  I suspect it would make this
caller simpler, but I do not know how invasive such changes are for
other callers of map_user().

Such an update can be left outside of this series, of course.

> +		strbuf_addch(sb, ' ');
> +		strbuf_addch(sb, '<');
> +		strbuf_add(sb, person_mail, strlen(person_mail));
> +		strbuf_addch(sb, '>');
>  		strbuf_addch(sb, '\n');

Is that strbuf_addf(sb, " <%s>\n", person_mail)?

Re: [PATCH 4/5] pretty: Use mailmap to display username and email

[Antoine Pelisse]

> Or it might be better to make those two strbufs output-only
> parameter, e.g.
>
>         map_user(struct string_list *mailmap,
>                 const char *name, size_t namelen,
>                 const char *mail, size_t maillen,
>                 struct strbuf *name_out, struct strbuf *mail_out);
>
> then after split_ident_line(), this caller could feed two pointers
> into the original "line" as name and mail parameter, without making
> any copies (the callee has to make a copy but it has to be done
> anyway when the name/mail is mapped).  I suspect it would make this
> caller simpler, but I do not know how invasive such changes are for
> other callers of map_user().

It makes a lot of sense.
blame.c::get_commit_info() hard code the length
shortlog.c::insert_one_record() hard code the length
pretty.c::format_person_part() hard code the length

I don't think it will be invasive.

> Such an update can be left outside of this series, of course.

I will try to make it at the beginning of the series. It will avoid unnecessary
conflicts.

>> +             strbuf_addch(sb, ' ');
>> +             strbuf_addch(sb, '<');
>> +             strbuf_add(sb, person_mail, strlen(person_mail));
>> +             strbuf_addch(sb, '>');
>>               strbuf_addch(sb, '\n');
>
> Is that strbuf_addf(sb, " <%s>\n", person_mail)?

Of couse ;) Fixed.

[PATCH 5/5] log: Add --use-mailmap option

[Antoine Pelisse]

Add the --use-mailmap option to log commands. It allows
to display names from mailmap file when displaying logs,
whatever the format used.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
---
 builtin/log.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/builtin/log.c b/builtin/log.c
index e7b7db1..d2bd8ce 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -22,6 +22,7 @@
 #include "branch.h"
 #include "streaming.h"
 #include "version.h"
+#include "mailmap.h"
 
 /* Set a default date-time format for git log ("log.date" config variable) */
 static const char *default_date_mode = NULL;
@@ -94,11 +95,12 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
 			 struct rev_info *rev, struct setup_revision_opt *opt)
 {
 	struct userformat_want w;
-	int quiet = 0, source = 0;
+	int quiet = 0, source = 0, mailmap = 0;
 
 	const struct option builtin_log_options[] = {
 		OPT_BOOLEAN(0, "quiet", &quiet, N_("suppress diff output")),
 		OPT_BOOLEAN(0, "source", &source, N_("show source")),
+		OPT_BOOLEAN(0, "use-mailmap", &mailmap, N_("Use mail map file")),
 		{ OPTION_CALLBACK, 0, "decorate", NULL, NULL, N_("decorate options"),
 		  PARSE_OPT_OPTARG, decorate_callback},
 		OPT_END()
@@ -136,6 +138,11 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
 	if (source)
 		rev->show_source = 1;
 
+	if (mailmap) {
+		rev->mailmap = xcalloc(1, sizeof(struct string_list));
+		read_mailmap(rev->mailmap, NULL);
+	}
+
 	if (rev->pretty_given && rev->commit_format == CMIT_FMT_RAW) {
 		/*
 		 * "log --pretty=raw" is special; ignore UI oriented
-- 
1.8.1.rc1.5.g7e0651a

Re: [PATCH 5/5] log: Add --use-mailmap option

[Antoine Pelisse]

On Tue, Dec 11, 2012 at 11:21 PM, Antoine Pelisse <apelisse@gmail.com> wrote:
> Add the --use-mailmap option to log commands. It allows
> to display names from mailmap file when displaying logs,
> whatever the format used.

The question is which log commands actually ?
Shouldn't we put the option in revision.c::handle_revision_opt instead ?
My opinion is that it belongs to 'Commit Formatting'.
It would also make sense to be able to use '--use-mailmap' when running
format-patch for example.

Also, I've noticed that my series break some tests (linked with
format-patch BTW).
I fixed that and re-ran all tests successfully. I will resubmit it later.

Re: [PATCH 5/5] log: Add --use-mailmap option

[Junio C Hamano]

Antoine Pelisse <apelisse@gmail.com> writes:

> On Tue, Dec 11, 2012 at 11:21 PM, Antoine Pelisse <apelisse@gmail.com> wrote:
>> Add the --use-mailmap option to log commands. It allows
>> to display names from mailmap file when displaying logs,
>> whatever the format used.
>
> The question is which log commands actually ?
> Shouldn't we put the option in revision.c::handle_revision_opt instead ?

I was trying to avoid that to make it harder to trigger the
"feature" by mistake.  The rewriting with mailmap is for human
consumption and when we replay the history (e.g. format-patch used
as input for am or rebase), we should never be applying it.

Re: [PATCH 0/5] Allow git log to use mailmap file

[Junio C Hamano]

Antoine Pelisse <apelisse@gmail.com> writes:

> Implement the feature suggested here [1] by Rich Mindwinter
> and Junio C Hamano (and following his advices)
>
> This is a pre-version so there are a bunch of things still missing,
> among them:
>  - There is no tests
>  - Grep search for mailmap author/committer is not available
>  - There is no documentation of the new option
>
> [1]: http://thread.gmane.org/gmane.comp.version-control.git/211270

That was quick ;-)

> Antoine Pelisse (5):
>   Use split_ident_line to parse author and committer
>   mailmap: Remove buffer length limit in map_user
>   mailmap: Add mailmap structure to rev_info and pp
>   pretty: Use mailmap to display username and email
>   log: Add --use-mailmap option
>
>  builtin/blame.c | 59 +++++++++++++++++-------------------------------
>  builtin/log.c   |  9 +++++++-
>  commit.h        |  1 +
>  log-tree.c      |  1 +
>  mailmap.c       | 16 ++++++-------
>  pretty.c        | 70 ++++++++++++++++++++++++++++++++++++---------------------
>  revision.h      |  1 +
>  7 files changed, 84 insertions(+), 73 deletions(-)
>
> --
> 1.8.1.rc1.5.g7e0651a

Re: [PATCH 0/5] Allow git log to use mailmap file

[Rich Midwinter]

It certainly was. Thanks for picking this up so quick guys.

On 11 December 2012 22:33, Junio C Hamano <gitster@pobox.com> wrote:
> Antoine Pelisse <apelisse@gmail.com> writes:
>
>> Implement the feature suggested here [1] by Rich Mindwinter
>> and Junio C Hamano (and following his advices)
>>
>> This is a pre-version so there are a bunch of things still missing,
>> among them:
>>  - There is no tests
>>  - Grep search for mailmap author/committer is not available
>>  - There is no documentation of the new option
>>
>> [1]: http://thread.gmane.org/gmane.comp.version-control.git/211270
>
> That was quick ;-)
>
>> Antoine Pelisse (5):
>>   Use split_ident_line to parse author and committer
>>   mailmap: Remove buffer length limit in map_user
>>   mailmap: Add mailmap structure to rev_info and pp
>>   pretty: Use mailmap to display username and email
>>   log: Add --use-mailmap option
>>
>>  builtin/blame.c | 59 +++++++++++++++++-------------------------------
>>  builtin/log.c   |  9 +++++++-
>>  commit.h        |  1 +
>>  log-tree.c      |  1 +
>>  mailmap.c       | 16 ++++++-------
>>  pretty.c        | 70 ++++++++++++++++++++++++++++++++++++---------------------
>>  revision.h      |  1 +
>>  7 files changed, 84 insertions(+), 73 deletions(-)
>>
>> --
>> 1.8.1.rc1.5.g7e0651a