We already have two options and are about to add a few more.
To avoid having a huge number of boolean arguments, let's
convert to an options struct which can be passed in.

Signed-off-by: Jeff King <p...@peff.net>
---
 builtin/interpret-trailers.c | 13 ++++++-------
 trailer.c                    |  9 +++++----
 trailer.h                    |  9 ++++++++-
 3 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/builtin/interpret-trailers.c b/builtin/interpret-trailers.c
index 175f14797b..bb0d7b937a 100644
--- a/builtin/interpret-trailers.c
+++ b/builtin/interpret-trailers.c
@@ -18,13 +18,12 @@ static const char * const git_interpret_trailers_usage[] = {
 
 int cmd_interpret_trailers(int argc, const char **argv, const char *prefix)
 {
-       int in_place = 0;
-       int trim_empty = 0;
+       struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
        struct string_list trailers = STRING_LIST_INIT_NODUP;
 
        struct option options[] = {
-               OPT_BOOL(0, "in-place", &in_place, N_("edit files in place")),
-               OPT_BOOL(0, "trim-empty", &trim_empty, N_("trim empty 
trailers")),
+               OPT_BOOL(0, "in-place", &opts.in_place, N_("edit files in 
place")),
+               OPT_BOOL(0, "trim-empty", &opts.trim_empty, N_("trim empty 
trailers")),
                OPT_STRING_LIST(0, "trailer", &trailers, N_("trailer"),
                                N_("trailer(s) to add")),
                OPT_END()
@@ -36,11 +35,11 @@ int cmd_interpret_trailers(int argc, const char **argv, 
const char *prefix)
        if (argc) {
                int i;
                for (i = 0; i < argc; i++)
-                       process_trailers(argv[i], in_place, trim_empty, 
&trailers);
+                       process_trailers(argv[i], &opts, &trailers);
        } else {
-               if (in_place)
+               if (opts.in_place)
                        die(_("no input file given for in-place editing"));
-               process_trailers(NULL, in_place, trim_empty, &trailers);
+               process_trailers(NULL, &opts, &trailers);
        }
 
        string_list_clear(&trailers, 0);
diff --git a/trailer.c b/trailer.c
index 751b56c009..0a0c2c264d 100644
--- a/trailer.c
+++ b/trailer.c
@@ -968,7 +968,8 @@ static FILE *create_in_place_tempfile(const char *file)
        return outfile;
 }
 
-void process_trailers(const char *file, int in_place, int trim_empty, struct 
string_list *trailers)
+void process_trailers(const char *file, struct process_trailer_options *opts,
+                     struct string_list *trailers)
 {
        LIST_HEAD(head);
        LIST_HEAD(arg_head);
@@ -980,7 +981,7 @@ void process_trailers(const char *file, int in_place, int 
trim_empty, struct str
 
        read_input_file(&sb, file);
 
-       if (in_place)
+       if (opts->in_place)
                outfile = create_in_place_tempfile(file);
 
        /* Print the lines before the trailers */
@@ -990,14 +991,14 @@ void process_trailers(const char *file, int in_place, int 
trim_empty, struct str
 
        process_trailers_lists(&head, &arg_head);
 
-       print_all(outfile, &head, trim_empty);
+       print_all(outfile, &head, opts->trim_empty);
 
        free_all(&head);
 
        /* Print the lines after the trailers as is */
        fwrite(sb.buf + trailer_end, 1, sb.len - trailer_end, outfile);
 
-       if (in_place)
+       if (opts->in_place)
                if (rename_tempfile(&trailers_tempfile, file))
                        die_errno(_("could not rename temporary file to %s"), 
file);
 
diff --git a/trailer.h b/trailer.h
index 65cc5d79c6..b33c5aa57d 100644
--- a/trailer.h
+++ b/trailer.h
@@ -22,7 +22,14 @@ struct trailer_info {
        size_t trailer_nr;
 };
 
-void process_trailers(const char *file, int in_place, int trim_empty,
+struct process_trailer_options {
+       int in_place;
+       int trim_empty;
+};
+
+#define PROCESS_TRAILER_OPTIONS_INIT {0}
+
+void process_trailers(const char *file, struct process_trailer_options *opts,
                      struct string_list *trailers);
 
 void trailer_info_get(struct trailer_info *info, const char *str);
-- 
2.14.0.609.gd2d1f7ddf

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