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commit a304ab22b12f41712dbcd41b6ff001feb062b03f
Author: Colin Watson <cjwatson@debian.org>
Date: Mon May 28 17:41:05 2018 +0100
Fix domain handling in argp
man-db sets its default text domain to "man-db", and keeps all Gnulib's
strings in a separate "man-db-gnulib" domain, using 'gnulib-tool
--po-domain=man-db' which results in
-DDEFAULT_TEXT_DOMAIN=\"man-db-gnulib\". (I checked this general
approach with Bruno a while back and he said it was fine.)
However, Gnulib's argp implementation has three bugs which cause this
not to work properly:
* It hardcodes "libc" as a domain in two places. This is obviously
wrong in Gnulib.
* It uses argp_domain as both the domain used to translate its own
strings (i.e. string literals in lib/argp-*.c) and the domain used
to translate strings provided by the user, which normally have to
use gettext_noop so that they can be used as 'struct argp_option'
initialisers. This is dreadfully inconvenient because you have to
copy strings about all over the place and keep your POT file up to
date as the argp implementation changes. If argp is in libc then
this is obviously impossible.
Instead, argp should use DEFAULT_TEXT_DOMAIN to translate its own
string literals (falling back to the default program domain if that
is not set), and should reserve argp_domain for translating strings
that appear in that argp structure.
* In a number of places, argp uses the domain of the root argp
structure when translating text from a child argp structure. This is
the direct cause of Robert's bug, because the standard --help and
--version options are implemented as a child argp structure with its
own domain.
My patch changes this to use argp_domain from the child instead.
However, on reflection, I'm not certain that this is correct;
arguably it needs to walk up the tree until it finds a domain to
use. This depends on whether you think that argp_domain == NULL
means "use default program domain" or "use same domain as parent
argp structure".
https://lists.gnu.org/r/bug-gnulib/2008-03/msg00144.html
diff --git a/gl/lib/argp-help.c b/gl/lib/argp-help.c
index 80cdb44937..4e600f269d 100644
--- a/gl/lib/argp-help.c
+++ b/gl/lib/argp-help.c
@@ -49,6 +49,16 @@
# include "gettext.h"
#endif
+#ifdef _LIBC
+# define ARGP_TEXT_DOMAIN "libc"
+#else
+# ifdef DEFAULT_TEXT_DOMAIN
+# define ARGP_TEXT_DOMAIN DEFAULT_TEXT_DOMAIN
+# else
+# define ARGP_TEXT_DOMAIN NULL
+# endif
+#endif
+
#include "argp.h"
#include "argp-fmtstream.h"
#include "argp-namefrob.h"
@@ -148,7 +158,7 @@ validate_uparams (const struct argp_state *state, struct uparams *upptr)
{
__argp_failure (state, 0, 0,
dgettext (state == NULL ? NULL
- : state->root_argp->argp_domain,
+ : ARGP_TEXT_DOMAIN,
"\
ARGP_HELP_FMT: %s value is less than or equal to %s"),
"rmargin", up->name);
@@ -224,7 +234,7 @@ fill_in_uparams (const struct argp_state *state)
if (unspec && !un->is_bool)
__argp_failure (state, 0, 0,
dgettext (state == NULL ? NULL
- : state->root_argp->argp_domain,
+ : ARGP_TEXT_DOMAIN,
"\
%.*s: ARGP_HELP_FMT parameter requires a value"),
(int) var_len, var);
@@ -235,7 +245,7 @@ fill_in_uparams (const struct argp_state *state)
if (un == uparam_names + nuparam_names)
__argp_failure (state, 0, 0,
dgettext (state == NULL ? NULL
- : state->root_argp->argp_domain, "\
+ : ARGP_TEXT_DOMAIN, "\
%.*s: Unknown ARGP_HELP_FMT parameter"),
(int) var_len, var);
@@ -247,7 +257,7 @@ fill_in_uparams (const struct argp_state *state)
{
__argp_failure (state, 0, 0,
dgettext (state == NULL ? NULL
- : state->root_argp->argp_domain,
+ : ARGP_TEXT_DOMAIN,
"Garbage in ARGP_HELP_FMT: %s"), var);
break;
}
@@ -1256,7 +1266,7 @@ hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
__argp_fmtstream_putc (stream, *so);
if (!have_long_opt || uparams.dup_args)
arg (real, " %s", "[%s]",
- state == NULL ? NULL : state->root_argp->argp_domain,
+ state == NULL ? NULL : entry->argp->argp_domain,
stream);
else if (real->arg)
hhstate->suppressed_dup_arg = 1;
@@ -1278,7 +1288,7 @@ hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
should be pretty rare anyway... */
__argp_fmtstream_puts (stream,
dgettext (state == NULL ? NULL
- : state->root_argp->argp_domain,
+ : entry->argp->argp_domain,
opt->name));
}
}
@@ -1292,7 +1302,7 @@ hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
comma (uparams.long_opt_col, &pest);
__argp_fmtstream_printf (stream, "--%s", opt->name);
arg (real, "=%s", "[=%s]",
- state == NULL ? NULL : state->root_argp->argp_domain, stream);
+ state == NULL ? NULL : entry->argp->argp_domain, stream);
}
}
@@ -1312,7 +1322,7 @@ hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
else
{
const char *tstr = real->doc ? dgettext (state == NULL ? NULL
- : state->root_argp->argp_domain,
+ : entry->argp->argp_domain,
real->doc) : 0;
const char *fstr = filter_doc (tstr, real->key, entry->argp, state);
if (fstr && *fstr)
@@ -1361,7 +1371,7 @@ hol_help (struct hol *hol, const struct argp_state *state,
if (hhstate.suppressed_dup_arg && uparams.dup_args_note)
{
const char *tstr = dgettext (state == NULL ? NULL
- : state->root_argp->argp_domain, "\
+ : ARGP_TEXT_DOMAIN, "\
Mandatory or optional arguments to long options are also mandatory or \
optional for any corresponding short options.");
const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_DUP_ARGS_NOTE,
@@ -1727,11 +1737,11 @@ _help (const struct argp *argp, const struct argp_state *state, FILE *stream,
if (first_pattern)
__argp_fmtstream_printf (fs, "%s %s",
- dgettext (argp->argp_domain, "Usage:"),
+ dgettext (ARGP_TEXT_DOMAIN, "Usage:"),
name);
else
__argp_fmtstream_printf (fs, "%s %s",
- dgettext (argp->argp_domain, " or: "),
+ dgettext (ARGP_TEXT_DOMAIN, " or: "),
name);
/* We set the lmargin as well as the wmargin, because hol_usage
@@ -1742,7 +1752,7 @@ _help (const struct argp *argp, const struct argp_state *state, FILE *stream,
/* Just show where the options go. */
{
if (hol->num_entries > 0)
- __argp_fmtstream_puts (fs, dgettext (argp->argp_domain,
+ __argp_fmtstream_puts (fs, dgettext (ARGP_TEXT_DOMAIN,
" [OPTION...]"));
}
else
@@ -1770,7 +1780,7 @@ _help (const struct argp *argp, const struct argp_state *state, FILE *stream,
if (flags & ARGP_HELP_SEE)
{
- __argp_fmtstream_printf (fs, dgettext (argp->argp_domain, "\
+ __argp_fmtstream_printf (fs, dgettext (ARGP_TEXT_DOMAIN, "\
Try '%s --help' or '%s --usage' for more information.\n"),
name, name);
anything = 1;
@@ -1797,7 +1807,7 @@ Try '%s --help' or '%s --usage' for more information.\n"),
{
if (anything)
__argp_fmtstream_putc (fs, '\n');
- __argp_fmtstream_printf (fs, dgettext (argp->argp_domain,
+ __argp_fmtstream_printf (fs, dgettext (ARGP_TEXT_DOMAIN,
"Report bugs to %s.\n"),
argp_program_bug_address);
anything = 1;
@@ -1998,8 +2008,7 @@ __argp_failure (const struct argp_state *state, int status, int errnum,
# endif
# endif
if (! s && ! (s = strerror (errnum)))
- s = dgettext (state->root_argp->argp_domain,
- "Unknown system error");
+ s = dgettext (ARGP_TEXT_DOMAIN, "Unknown system error");
fputs_unlocked (s, stream);
#endif
}
diff --git a/gl/lib/argp-parse.c b/gl/lib/argp-parse.c
index 053495ec03..23f54f3aa7 100644
--- a/gl/lib/argp-parse.c
+++ b/gl/lib/argp-parse.c
@@ -40,6 +40,16 @@
#endif
#define N_(msgid) msgid
+#ifdef _LIBC
+# define ARGP_TEXT_DOMAIN "libc"
+#else
+# ifdef DEFAULT_TEXT_DOMAIN
+# define ARGP_TEXT_DOMAIN DEFAULT_TEXT_DOMAIN
+# else
+# define ARGP_TEXT_DOMAIN NULL
+# endif
+#endif
+
#include "argp.h"
#include "argp-namefrob.h"
@@ -135,7 +145,8 @@ argp_default_parser (int key, char *arg, struct argp_state *state)
}
static const struct argp argp_default_argp =
- {argp_default_options, &argp_default_parser, NULL, NULL, NULL, NULL, "libc"};
+ {argp_default_options, &argp_default_parser, NULL, NULL, NULL, NULL,
+ ARGP_TEXT_DOMAIN};
static const struct argp_option argp_version_options[] =
@@ -156,7 +167,7 @@ argp_version_parser (int key, char *arg, struct argp_state *state)
fprintf (state->out_stream, "%s\n", argp_program_version);
else
__argp_error (state, "%s",
- dgettext (state->root_argp->argp_domain,
+ dgettext (ARGP_TEXT_DOMAIN,
"(PROGRAM ERROR) No version known!?"));
if (! (state->flags & ARGP_NO_EXIT))
exit (0);
@@ -168,7 +179,8 @@ argp_version_parser (int key, char *arg, struct argp_state *state)
}
static const struct argp argp_version_argp =
- {argp_version_options, &argp_version_parser, NULL, NULL, NULL, NULL, "libc"};
+ {argp_version_options, &argp_version_parser, NULL, NULL, NULL, NULL,
+ ARGP_TEXT_DOMAIN};
/* Returns the offset into the getopt long options array LONG_OPTIONS of a
long option with called NAME, or -1 if none is found. Passing NULL as
@@ -609,8 +621,7 @@ parser_finalize (struct parser *parser,
if (!(parser->state.flags & ARGP_NO_ERRS)
&& parser->state.err_stream)
fprintf (parser->state.err_stream,
- dgettext (parser->argp->argp_domain,
- "%s: Too many arguments\n"),
+ dgettext (ARGP_TEXT_DOMAIN, "%s: Too many arguments\n"),
parser->state.name);
err = EBADKEY;
}
@@ -759,7 +770,7 @@ parser_parse_opt (struct parser *parser, int opt, char *val)
N_("(PROGRAM ERROR) Option should have been recognized!?");
if (group_key == 0)
__argp_error (&parser->state, "-%c: %s", opt,
- dgettext (parser->argp->argp_domain, bad_key_err));
+ dgettext (ARGP_TEXT_DOMAIN, bad_key_err));
else
{
struct option *long_opt = parser->long_opts;
@@ -767,7 +778,7 @@ parser_parse_opt (struct parser *parser, int opt, char *val)
long_opt++;
__argp_error (&parser->state, "--%s: %s",
long_opt->name ? long_opt->name : "???",
- dgettext (parser->argp->argp_domain, bad_key_err));
+ dgettext (ARGP_TEXT_DOMAIN, bad_key_err));
}
}
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