diff options
authorJunio C Hamano <>2016-08-31 23:27:19 (GMT)
committerJunio C Hamano <>2016-09-01 01:07:08 (GMT)
commitcd48dadb8d840637f0f55b1ad0d8f50d892c767d (patch)
parent8576fde6cb4013a41d162e33f7a0046a5ea6801e (diff)
diff.c: remove output_prefix_length field
"diff/log --stat" has a logic that determines the display columns available for the diffstat part of the output and apportions it for pathnames and diffstat graph automatically. 5e71a84a (Add output_prefix_length to diff_options, 2012-04-16) added the output_prefix_length field to diff_options structure to allow this logic to subtract the display columns used for the history graph part from the total "terminal width"; this matters when the "git log --graph -p" option is in use. The field must be set to the number of display columns needed to show the output from the output_prefix() callback, which is error prone. As there is only one user of the field, and the user has the actual value of the prefix string, let's get rid of the field and have the user count the display width itself. Signed-off-by: Junio C Hamano <>
3 files changed, 1 insertions, 4 deletions
diff --git a/diff.c b/diff.c
index b43d3dd..ae069c3 100644
--- a/diff.c
+++ b/diff.c
@@ -1625,7 +1625,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
if (options->stat_width == -1)
- width = term_columns() - options->output_prefix_length;
+ width = term_columns() - strlen(line_prefix);
width = options->stat_width ? options->stat_width : 80;
number_width = decimal_width(max_change) > number_width ?
diff --git a/diff.h b/diff.h
index 125447b..49e4aaa 100644
--- a/diff.h
+++ b/diff.h
@@ -174,7 +174,6 @@ struct diff_options {
diff_format_fn_t format_callback;
void *format_callback_data;
diff_prefix_fn_t output_prefix;
- int output_prefix_length;
void *output_prefix_data;
int diff_path_counter;
diff --git a/graph.c b/graph.c
index dd17201..a468038 100644
--- a/graph.c
+++ b/graph.c
@@ -197,7 +197,6 @@ static struct strbuf *diff_output_prefix_callback(struct diff_options *opt, void
- opt->output_prefix_length = graph->width;
graph_padding_line(graph, &msgbuf);
return &msgbuf;
@@ -245,7 +244,6 @@ struct git_graph *graph_init(struct rev_info *opt)
opt->diffopt.output_prefix = diff_output_prefix_callback;
opt->diffopt.output_prefix_data = graph;
- opt->diffopt.output_prefix_length = 0;
return graph;