From: Mark Walters <markwalters1009@gmail.com>
To: Michal Sojka <sojkam1@fel.cvut.cz>, notmuch@notmuchmail.org
Subject: Re: [PATCH v4 5/6] cli: search: Add configurable way to filter
	out	duplicate addresses
In-Reply-To: <1414421455-3037-6-git-send-email-sojkam1@fel.cvut.cz>
References: <1414421455-3037-1-git-send-email-sojkam1@fel.cvut.cz>
	<1414421455-3037-6-git-send-email-sojkam1@fel.cvut.cz>
User-Agent: Notmuch/0.18.1+86~gef5e66a (http://notmuchmail.org) Emacs/23.4.1
	(x86_64-pc-linux-gnu)
Date: Thu, 30 Oct 2014 08:16:18 +0000
Message-ID: <87egtqug4t.fsf@qmul.ac.uk>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Precedence: list


On Mon, 27 Oct 2014, Michal Sojka <sojkam1@fel.cvut.cz> wrote:
> This adds an algorithm to filter out duplicate addresses from address
> outputs (sender, receivers). The algorithm can be configured with
> --filter-by command line option.
>
> The code here is an extended version of a patch from Jani Nikula.

Hi

As this is getting into the more controversial bike shedding region I
wonder if it would be worth splitting this into 2 patches: the first
could do the default dedupe based on name/address and the second could
do add the filter-by options.=20

I think the default deduping is obviously worth doing but I am not sure
about the rest. In any case I think the default deduping could go in
pre-freeze but I would recommend the rest is left until after.

> ---
>  completion/notmuch-completion.bash |  6 ++-
>  completion/notmuch-completion.zsh  |  3 +-
>  doc/man1/notmuch-search.rst        | 38 +++++++++++++++
>  notmuch-search.c                   | 98 ++++++++++++++++++++++++++++++++=
+++---
>  test/T090-search-output.sh         | 87 +++++++++++++++++++++++++++++++++
>  test/T095-search-filter-by.sh      | 64 +++++++++++++++++++++++++
>  6 files changed, 288 insertions(+), 8 deletions(-)
>  create mode 100755 test/T095-search-filter-by.sh
>
> diff --git a/completion/notmuch-completion.bash b/completion/notmuch-comp=
letion.bash
> index cfbd389..6b6d43a 100644
> --- a/completion/notmuch-completion.bash
> +++ b/completion/notmuch-completion.bash
> @@ -305,12 +305,16 @@ _notmuch_search()
>  	    COMPREPLY=3D( $( compgen -W "true false flag all" -- "${cur}" ) )
>  	    return
>  	    ;;
> +	--filter-by)
> +	    COMPREPLY=3D( $( compgen -W "nameaddr name addr addrfold nameaddrfo=
ld" -- "${cur}" ) )
> +	    return
> +	    ;;
>      esac
>=20=20
>      ! $split &&
>      case "${cur}" in
>  	-*)
> -	    local options=3D"--format=3D --output=3D --sort=3D --offset=3D --li=
mit=3D --exclude=3D --duplicate=3D"
> +	    local options=3D"--format=3D --output=3D --sort=3D --offset=3D --li=
mit=3D --exclude=3D --duplicate=3D --filter-by=3D"
>  	    compopt -o nospace
>  	    COMPREPLY=3D( $(compgen -W "$options" -- ${cur}) )
>  	    ;;
> diff --git a/completion/notmuch-completion.zsh b/completion/notmuch-compl=
etion.zsh
> index 3e52a00..3e535df 100644
> --- a/completion/notmuch-completion.zsh
> +++ b/completion/notmuch-completion.zsh
> @@ -53,7 +53,8 @@ _notmuch_search()
>      '--max-threads=3D[display only the first x threads from the search r=
esults]:number of threads to show: ' \
>      '--first=3D[omit the first x threads from the search results]:number=
 of threads to omit: ' \
>      '--sort=3D[sort results]:sorting:((newest-first\:"reverse chronologi=
cal order" oldest-first\:"chronological order"))' \
> -    '--output=3D[select what to output]:output:((summary threads message=
s files tags sender recipients))'
> +    '--output=3D[select what to output]:output:((summary threads message=
s files tags sender recipients))' \
> +    '--filter-by=3D[filter out duplicate addresses]:filter-by:((nameaddr=
\:"both name and address part" name\:"name part" addr\:"address part" addrf=
old\:"case-insensitive address part" nameaddrfold\:"name and case-insensiti=
ve address part"))'
>  }
>=20=20
>  _notmuch()
> diff --git a/doc/man1/notmuch-search.rst b/doc/man1/notmuch-search.rst
> index b6607c9..84af2da 100644
> --- a/doc/man1/notmuch-search.rst
> +++ b/doc/man1/notmuch-search.rst
> @@ -85,6 +85,9 @@ Supported options for **search** include
>              (--format=3Dtext0), as a JSON array (--format=3Djson), or as
>              an S-Expression list (--format=3Dsexp).
>=20=20
> +            Duplicate addresses are filtered out. Filtering can be
> +            configured with the --filter-by option.
> +
>  	    Note: Searching for **sender** should be much faster than
>  	    searching for **recipients**, because sender addresses are
>  	    cached directly in the database whereas other addresses
> @@ -151,6 +154,41 @@ Supported options for **search** include
>          prefix. The prefix matches messages based on filenames. This
>          option filters filenames of the matching messages.
>=20=20
> +    ``--filter-by=3D``\ (**nameaddr**\ \|\ **name** \|\ **addr**\ \|\ **=
addrfold**\ \|\ **nameaddrfold**\)
> +
> +	Can be used with ``--output=3Dsender`` or
> +	``--output=3Drecipients`` to filter out duplicate addresses. The
> +	filtering algorithm receives a sequence of email addresses and
> +	outputs the same sequence without the addresses that are
> +	considered a duplicate of a previously output address. What is
> +	considered a duplicate depends on how the two addresses are
> +	compared and this can be controlled with the follwing flags:
> +
> +	**nameaddr** means that both name and address parts are
> +	compared in case-sensitive manner. Therefore, all same looking
> +	addresses strings are considered duplicate. This is the
> +	default.
> +
> +	**name** means that only the name part is compared (in
> +	case-sensitive manner). For example, the addresses "John Doe
> +	<me@example.com>" and "John Doe <john@doe.name>" will be
> +	considered duplicate.
> +
> +	**addr** means that only the address part is compared (in
> +	case-sensitive manner). For example, the addresses "John Doe
> +	<john@example.com>" and "Dr. John Doe <john@example.com>" will
> +	be considered duplicate.
> +
> +	**addrfold** is like **addr**, but comparison is done in
> +	canse-insensitive manner. For example, the addresses "John Doe
> +	<john@example.com>" and "Dr. John Doe <JOHN@EXAMPLE.COM>" will
> +	be considered duplicate.
> +
> +	**nameaddrfold** is like **nameaddr**, but address comparison
> +	is done in canse-insensitive manner. For example, the
> +	addresses "John Doe <john@example.com>" and "John Doe
> +	<JOHN@EXAMPLE.COM>" will be considered duplicate.
> +
>  EXIT STATUS
>  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>=20=20
> diff --git a/notmuch-search.c b/notmuch-search.c
> index ce3bfb2..47aa979 100644
> --- a/notmuch-search.c
> +++ b/notmuch-search.c
> @@ -34,6 +34,14 @@ typedef enum {
>=20=20
>  #define OUTPUT_ADDRESS_FLAGS (OUTPUT_SENDER | OUTPUT_RECIPIENTS)
>=20=20
> +typedef enum {
> +    FILTER_BY_NAMEADDR =3D 0,
> +    FILTER_BY_NAME,
> +    FILTER_BY_ADDR,
> +    FILTER_BY_ADDRFOLD,
> +    FILTER_BY_NAMEADDRFOLD,
> +} filter_by_t;
> +
>  typedef struct {
>      sprinter_t *format;
>      notmuch_query_t *query;
> @@ -42,6 +50,7 @@ typedef struct {
>      int offset;
>      int limit;
>      int dupe;
> +    filter_by_t filter_by;
>  } search_options_t;
>=20=20
>  typedef struct {
> @@ -229,6 +238,52 @@ do_search_threads (search_options_t *opt)
>      return 0;
>  }
>=20=20
> +/* Returns TRUE iff name and/or addr is considered duplicite. */

A triviality; duplicite should be duplicate

> +static notmuch_bool_t
> +check_duplicite (const search_options_t *opt, GHashTable *addrs, const c=
har *name, const char *addr)

I am not sure on style but maybe is_duplicate would be clearer?

Best wishes

Mark

> +{
> +    notmuch_bool_t duplicite;
> +    char *key;
> +
> +    if (opt->filter_by =3D=3D FILTER_BY_ADDRFOLD ||
> +	opt->filter_by =3D=3D FILTER_BY_NAMEADDRFOLD) {
> +	gchar *folded =3D g_utf8_casefold (addr, -1);
> +	addr =3D talloc_strdup (opt->format, folded);
> +	g_free (folded);
> +    }
> +    switch (opt->filter_by) {
> +    case FILTER_BY_NAMEADDR:
> +    case FILTER_BY_NAMEADDRFOLD:
> +	key =3D talloc_asprintf (opt->format, "%s <%s>", name, addr);
> +	break;
> +    case FILTER_BY_NAME:
> +	key =3D talloc_strdup (opt->format, name); /* !name results in !key */
> +	break;
> +    case FILTER_BY_ADDR:
> +    case FILTER_BY_ADDRFOLD:
> +	key =3D talloc_strdup (opt->format, addr);
> +	break;
> +    default:
> +	INTERNAL_ERROR("invalid --filter-by flags");
> +    }
> +
> +    if (opt->filter_by =3D=3D FILTER_BY_ADDRFOLD ||
> +	opt->filter_by =3D=3D FILTER_BY_NAMEADDRFOLD)
> +	talloc_free ((char*)addr);
> +
> +    if (! key)
> +	return FALSE;
> +
> +    duplicite =3D g_hash_table_lookup_extended (addrs, key, NULL, NULL);
> +
> +    if (! duplicite)
> +	g_hash_table_insert (addrs, key, NULL);
> +    else
> +	talloc_free (key);
> +
> +    return duplicite;
> +}
> +
>  static void
>  print_mailbox (const search_options_t *opt, const mailbox_t *mailbox)
>  {
> @@ -263,7 +318,8 @@ print_mailbox (const search_options_t *opt, const mai=
lbox_t *mailbox)
>  }
>=20=20
>  static void
> -process_address_list (const search_options_t *opt, InternetAddressList *=
list)
> +process_address_list (const search_options_t *opt, GHashTable *addrs,
> +		      InternetAddressList *list)
>  {
>      InternetAddress *address;
>      int i;
> @@ -279,7 +335,7 @@ process_address_list (const search_options_t *opt, In=
ternetAddressList *list)
>  	    if (group_list =3D=3D NULL)
>  		continue;
>=20=20
> -	    process_address_list (opt, group_list);
> +	    process_address_list (opt, addrs, group_list);
>  	} else {
>  	    InternetAddressMailbox *mailbox =3D INTERNET_ADDRESS_MAILBOX (addre=
ss);
>  	    mailbox_t mbx =3D {
> @@ -287,13 +343,16 @@ process_address_list (const search_options_t *opt, =
InternetAddressList *list)
>  		.addr =3D internet_address_mailbox_get_addr (mailbox),
>  	    };
>=20=20
> +	    if (check_duplicite (opt, addrs, mbx.name, mbx.addr))
> +		continue;
> +
>  	    print_mailbox (opt, &mbx);
>  	}
>      }
>  }
>=20=20
>  static void
> -process_address_header (const search_options_t *opt, const char *value)
> +process_address_header (const search_options_t *opt, GHashTable *addrs, =
const char *value)
>  {
>      InternetAddressList *list;
>=20=20
> @@ -304,7 +363,13 @@ process_address_header (const search_options_t *opt,=
 const char *value)
>      if (list =3D=3D NULL)
>  	return;
>=20=20
> -    process_address_list (opt, list);
> +    process_address_list (opt, addrs, list);
> +}
> +
> +static void
> +_my_talloc_free_for_g_hash (void *ptr)
> +{
> +    talloc_free (ptr);
>  }
>=20=20
>  static int
> @@ -314,8 +379,13 @@ do_search_messages (search_options_t *opt)
>      notmuch_messages_t *messages;
>      notmuch_filenames_t *filenames;
>      sprinter_t *format =3D opt->format;
> +    GHashTable *addresses =3D NULL;
>      int i;
>=20=20
> +    if (opt->output & OUTPUT_ADDRESS_FLAGS)
> +	addresses =3D g_hash_table_new_full (g_str_hash, g_str_equal,
> +					   _my_talloc_free_for_g_hash, NULL);
> +
>      if (opt->offset < 0) {
>  	opt->offset +=3D notmuch_query_count_messages (opt->query);
>  	if (opt->offset < 0)
> @@ -363,7 +433,7 @@ do_search_messages (search_options_t *opt)
>  		const char *addrs;
>=20=20
>  		addrs =3D notmuch_message_get_header (message, "from");
> -		process_address_header (opt, addrs);
> +		process_address_header (opt, addresses, addrs);
>  	    }
>=20=20
>  	    if (opt->output & OUTPUT_RECIPIENTS) {
> @@ -373,7 +443,7 @@ do_search_messages (search_options_t *opt)
>=20=20
>  		for (j =3D 0; j < ARRAY_SIZE (hdrs); j++) {
>  		    addrs =3D notmuch_message_get_header (message, hdrs[j]);
> -		    process_address_header (opt, addrs);
> +		    process_address_header (opt, addresses, addrs);
>  		}
>  	    }
>  	}
> @@ -381,6 +451,9 @@ do_search_messages (search_options_t *opt)
>  	notmuch_message_destroy (message);
>      }
>=20=20
> +    if (addresses)
> +	g_hash_table_unref (addresses);
> +
>      notmuch_messages_destroy (messages);
>=20=20
>      format->end (format);
> @@ -447,6 +520,7 @@ notmuch_search_command (notmuch_config_t *config, int=
 argc, char *argv[])
>  	.offset =3D 0,
>  	.limit =3D -1, /* unlimited */
>  	.dupe =3D -1,
> +	.filter_by =3D FILTER_BY_NAMEADDR,
>      };
>      char *query_str;
>      int opt_index, ret;
> @@ -490,6 +564,13 @@ notmuch_search_command (notmuch_config_t *config, in=
t argc, char *argv[])
>  	{ NOTMUCH_OPT_INT, &opt.offset, "offset", 'O', 0 },
>  	{ NOTMUCH_OPT_INT, &opt.limit, "limit", 'L', 0  },
>  	{ NOTMUCH_OPT_INT, &opt.dupe, "duplicate", 'D', 0  },
> +	{ NOTMUCH_OPT_KEYWORD, &opt.filter_by, "filter-by", 'b',
> +	  (notmuch_keyword_t []){ { "nameaddr", FILTER_BY_NAMEADDR },
> +				  { "name", FILTER_BY_NAME },
> +				  { "addr", FILTER_BY_ADDR },
> +				  { "addrfold", FILTER_BY_ADDRFOLD },
> +				  { "nameaddrfold", FILTER_BY_NAMEADDRFOLD },
> +				  { 0, 0 } } },
>  	{ 0, 0, 0, 0, 0 }
>      };
>=20=20
> @@ -500,6 +581,11 @@ notmuch_search_command (notmuch_config_t *config, in=
t argc, char *argv[])
>      if (! opt.output)
>  	opt.output =3D OUTPUT_SUMMARY;
>=20=20
> +    if (opt.filter_by && !(opt.output & OUTPUT_ADDRESS_FLAGS)) {
> +	fprintf (stderr, "Error: --filter-by can only be used with address outp=
ut.\n");
> +	return EXIT_FAILURE;
> +    }
> +
>      switch (format_sel) {
>      case NOTMUCH_FORMAT_TEXT:
>  	opt.format =3D sprinter_text_create (config, stdout);
> diff --git a/test/T090-search-output.sh b/test/T090-search-output.sh
> index 947d572..841a721 100755
> --- a/test/T090-search-output.sh
> +++ b/test/T090-search-output.sh
> @@ -387,6 +387,93 @@ cat <<EOF >EXPECTED
>  EOF
>  test_expect_equal_file OUTPUT EXPECTED
>=20=20
> +test_begin_subtest "--output=3Dsender"
> +notmuch search --output=3Dsender '*' >OUTPUT
> +cat <<EOF >EXPECTED
> +Fran=C3=A7ois Boulogne <boulogne.f@gmail.com>
> +Olivier Berger <olivier.berger@it-sudparis.eu>
> +Chris Wilson <chris@chris-wilson.co.uk>
> +Carl Worth <cworth@cworth.org>
> +Alexander Botero-Lowry <alex.boterolowry@gmail.com>
> +Keith Packard <keithp@keithp.com>
> +Jjgod Jiang <gzjjgod@gmail.com>
> +Rolland Santimano <rollandsantimano@yahoo.com>
> +Jan Janak <jan@ryngle.com>
> +Stewart Smith <stewart@flamingspork.com>
> +Lars Kellogg-Stedman <lars@seas.harvard.edu>
> +Alex Botero-Lowry <alex.boterolowry@gmail.com>
> +Ingmar Vanhassel <ingmar@exherbo.org>
> +Aron Griffis <agriffis@n01se.net>
> +Adrian Perez de Castro <aperez@igalia.com>
> +Israel Herraiz <isra@herraiz.org>
> +Mikhail Gusarov <dottedmag@dottedmag.net>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Dsender --format=3Djson"
> +notmuch search --output=3Dsender --format=3Djson '*' >OUTPUT
> +cat <<EOF >EXPECTED
> +[{"name": "Fran=C3=A7ois Boulogne", "address": "boulogne.f@gmail.com"},
> +{"name": "Olivier Berger", "address": "olivier.berger@it-sudparis.eu"},
> +{"name": "Chris Wilson", "address": "chris@chris-wilson.co.uk"},
> +{"name": "Carl Worth", "address": "cworth@cworth.org"},
> +{"name": "Alexander Botero-Lowry", "address": "alex.boterolowry@gmail.co=
m"},
> +{"name": "Keith Packard", "address": "keithp@keithp.com"},
> +{"name": "Jjgod Jiang", "address": "gzjjgod@gmail.com"},
> +{"name": "Rolland Santimano", "address": "rollandsantimano@yahoo.com"},
> +{"name": "Jan Janak", "address": "jan@ryngle.com"},
> +{"name": "Stewart Smith", "address": "stewart@flamingspork.com"},
> +{"name": "Lars Kellogg-Stedman", "address": "lars@seas.harvard.edu"},
> +{"name": "Alex Botero-Lowry", "address": "alex.boterolowry@gmail.com"},
> +{"name": "Ingmar Vanhassel", "address": "ingmar@exherbo.org"},
> +{"name": "Aron Griffis", "address": "agriffis@n01se.net"},
> +{"name": "Adrian Perez de Castro", "address": "aperez@igalia.com"},
> +{"name": "Israel Herraiz", "address": "isra@herraiz.org"},
> +{"name": "Mikhail Gusarov", "address": "dottedmag@dottedmag.net"}]
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Drecipients"
> +notmuch search --output=3Drecipients '*' >OUTPUT
> +cat <<EOF >EXPECTED
> +Allan McRae <allan@archlinux.org>
> +Discussion about the Arch User Repository (AUR) <aur-general@archlinux.o=
rg>
> +olivier.berger@it-sudparis.eu
> +notmuch@notmuchmail.org
> +notmuch <notmuch@notmuchmail.org>
> +Keith Packard <keithp@keithp.com>
> +Mikhail Gusarov <dottedmag@dottedmag.net>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Dsender --output=3Drecipients"
> +notmuch search --output=3Dsender --output=3Drecipients '*' >OUTPUT
> +cat <<EOF >EXPECTED
> +Fran=C3=A7ois Boulogne <boulogne.f@gmail.com>
> +Allan McRae <allan@archlinux.org>
> +Discussion about the Arch User Repository (AUR) <aur-general@archlinux.o=
rg>
> +Olivier Berger <olivier.berger@it-sudparis.eu>
> +olivier.berger@it-sudparis.eu
> +Chris Wilson <chris@chris-wilson.co.uk>
> +notmuch@notmuchmail.org
> +Carl Worth <cworth@cworth.org>
> +Alexander Botero-Lowry <alex.boterolowry@gmail.com>
> +Keith Packard <keithp@keithp.com>
> +Jjgod Jiang <gzjjgod@gmail.com>
> +Rolland Santimano <rollandsantimano@yahoo.com>
> +Jan Janak <jan@ryngle.com>
> +Stewart Smith <stewart@flamingspork.com>
> +Lars Kellogg-Stedman <lars@seas.harvard.edu>
> +notmuch <notmuch@notmuchmail.org>
> +Alex Botero-Lowry <alex.boterolowry@gmail.com>
> +Ingmar Vanhassel <ingmar@exherbo.org>
> +Aron Griffis <agriffis@n01se.net>
> +Adrian Perez de Castro <aperez@igalia.com>
> +Israel Herraiz <isra@herraiz.org>
> +Mikhail Gusarov <dottedmag@dottedmag.net>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
>  test_begin_subtest "sanitize output for quoted-printable line-breaks in =
author and subject"
>  add_message "[subject]=3D'two =3D?ISO-8859-1?Q?line=3D0A_subject?=3D
>  	headers'"
> diff --git a/test/T095-search-filter-by.sh b/test/T095-search-filter-by.sh
> new file mode 100755
> index 0000000..97d9a9b
> --- /dev/null
> +++ b/test/T095-search-filter-by.sh
> @@ -0,0 +1,64 @@
> +#!/usr/bin/env bash
> +test_description=3D'duplicite address filtering in "notmuch search --out=
put=3Drecipients"'
> +. ./test-lib.sh
> +
> +add_message '[to]=3D"Real Name <foo@example.com>, Real Name <bar@example=
.com>"'
> +add_message '[to]=3D"Nickname <foo@example.com>"' '[cc]=3D"Real Name <Ba=
r@Example.COM>"'
> +add_message '[to]=3D"Nickname <foo@example.com>"' '[bcc]=3D"Real Name <B=
ar@Example.COM>"'
> +
> +test_begin_subtest "--output=3Drecipients"
> +notmuch search --output=3Drecipients "*" >OUTPUT
> +cat <<EOF >EXPECTED
> +Real Name <foo@example.com>
> +Real Name <bar@example.com>
> +Nickname <foo@example.com>
> +Real Name <Bar@Example.COM>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Drecipients --filter-by=3Dnameaddr"
> +notmuch search --output=3Drecipients --filter-by=3Dnameaddr "*" >OUTPUT
> +# The same as above
> +cat <<EOF >EXPECTED
> +Real Name <foo@example.com>
> +Real Name <bar@example.com>
> +Nickname <foo@example.com>
> +Real Name <Bar@Example.COM>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Drecipients --filter-by=3Dname"
> +notmuch search --output=3Drecipients --filter-by=3Dname "*" >OUTPUT
> +cat <<EOF >EXPECTED
> +Real Name <foo@example.com>
> +Nickname <foo@example.com>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Drecipients --filter-by=3Daddr"
> +notmuch search --output=3Drecipients --filter-by=3Daddr "*" >OUTPUT
> +cat <<EOF >EXPECTED
> +Real Name <foo@example.com>
> +Real Name <bar@example.com>
> +Real Name <Bar@Example.COM>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Drecipients --filter-by=3Daddrfold"
> +notmuch search --output=3Drecipients --filter-by=3Daddrfold "*" >OUTPUT
> +cat <<EOF >EXPECTED
> +Real Name <foo@example.com>
> +Real Name <bar@example.com>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_begin_subtest "--output=3Drecipients --filter-by=3Dnameaddrfold"
> +notmuch search --output=3Drecipients --filter-by=3Dnameaddrfold "*" >OUT=
PUT
> +cat <<EOF >EXPECTED
> +Real Name <foo@example.com>
> +Real Name <bar@example.com>
> +Nickname <foo@example.com>
> +EOF
> +test_expect_equal_file OUTPUT EXPECTED
> +
> +test_done
> --=20
> 2.1.1
>
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