[PATCH i18n 03/11] i18n: parseopt: lookup help and argument translations when showing usage

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

---
 parse-options.c |   15 +++++++--------
 parse-options.h |    7 +++++--
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/parse-options.c b/parse-options.c
index 850cfa7..7690de8 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -490,7 +490,7 @@ static int usage_argh(const struct option *opts, FILE *outfile)
 			s = literal ? "[%s]" : "[<%s>]";
 	else
 		s = literal ? " %s" : " <%s>";
-	return fprintf(outfile, s, opts->argh ? opts->argh : "...");
+	return fprintf(outfile, s, opts->argh ? _(opts->argh) : "...");
 }
 
 #define USAGE_OPTS_WIDTH 24
@@ -508,13 +508,12 @@ static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
 	if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL)
 		fprintf(outfile, "cat <<\\EOF\n");
 
-	fprintf(outfile, "usage: %s\n", *usagestr++);
+	fprintf_ln(outfile, _("usage: %s"), _(*usagestr++));
 	while (*usagestr && **usagestr)
-		fprintf(outfile, "   or: %s\n", *usagestr++);
+		fprintf_ln(outfile, _("   or: %s"), _(*usagestr++));
 	while (*usagestr) {
-		fprintf(outfile, "%s%s\n",
-				**usagestr ? "    " : "",
-				*usagestr);
+		fprintf(outfile, "%s%s\n", **usagestr ? "    " : "",
+			_(*usagestr));
 		usagestr++;
 	}
 
@@ -528,7 +527,7 @@ static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
 		if (opts->type == OPTION_GROUP) {
 			fputc('\n', outfile);
 			if (*opts->help)
-				fprintf(outfile, "%s\n", opts->help);
+				fprintf(outfile, "%s\n", _(opts->help));
 			continue;
 		}
 		if (!full && (opts->flags & PARSE_OPT_HIDDEN))
@@ -558,7 +557,7 @@ static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
 			fputc('\n', outfile);
 			pad = USAGE_OPTS_WIDTH;
 		}
-		fprintf(outfile, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
+		fprintf(outfile, "%*s%s\n", pad + USAGE_GAP, "", _(opts->help));
 	}
 	fputc('\n', outfile);
 
diff --git a/parse-options.h b/parse-options.h
index def9ced..4e59f2c 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -66,12 +66,14 @@ typedef int parse_opt_ll_cb(struct parse_opt_ctx_t *ctx,
  *
  * `argh`::
  *   token to explain the kind of argument this option wants. Keep it
- *   homogeneous across the repository.
+ *   homogeneous across the repository. Should be wrapped by N_() for
+ *   translation.
  *
  * `help`::
  *   the short help associated to what the option does.
  *   Must never be NULL (except for OPTION_END).
  *   OPTION_GROUP uses this pointer to store the group header.
+ *   Should be wrapped by N_() for translation.
  *
  * `flags`::
  *   mask of parse_opt_option_flags.
@@ -158,7 +160,8 @@ struct option {
 #define OPT_BOOLEAN OPT_COUNTUP
 
 /* parse_options() will filter out the processed options and leave the
- * non-option arguments in argv[].
+ * non-option arguments in argv[]. usagestr strings should be marked
+ * for translation with N_().
  * Returns the number of arguments left in argv[].
  */
 extern int parse_options(int argc, const char **argv, const char *prefix,
-- 
1.7.3.1.256.g2539c.dirty