index d922b77aef2da84824a8e14fc21961e36e6d2e36..74db18846f3149822bb1cd9b988feb953cc309dd 100644 (file)
--- a/diff.c
+++ b/diff.c
static int scale_linear(int it, int width, int max_change)
{
+ if (!it)
+ return 0;
/*
- * make sure that at least one '-' is printed if there were deletions,
- * and likewise for '+'.
+ * make sure that at least one '-' or '+' is printed if
+ * there is any change to this path. The easiest way is to
+ * scale linearly as if the alloted width is one column shorter
+ * than it is, and then add 1 to the result.
*/
- if (max_change < 2)
- return it;
- return ((it - 1) * (width - 1) + max_change - 1) / (max_change - 1);
+ return 1 + (it * (width - 1) / max_change);
}
static void show_name(FILE *file,
@@ -1440,8 +1442,19 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
dels += del;
if (width <= max_change) {
- add = scale_linear(add, width, max_change);
- del = scale_linear(del, width, max_change);
+ int total = add + del;
+
+ total = scale_linear(add + del, width, max_change);
+ if (total < 2 && add && del)
+ /* width >= 2 due to the sanity check */
+ total = 2;
+ if (add < del) {
+ add = scale_linear(add, width, max_change);
+ del = total - add;
+ } else {
+ del = scale_linear(del, width, max_change);
+ add = total - del;
+ }
}
fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
xecfg.ctxlen = o->context;
xecfg.interhunkctxlen = o->interhunkcontext;
xecfg.flags = XDL_EMIT_FUNCNAMES;
+ if (DIFF_OPT_TST(o, FUNCCONTEXT))
+ xecfg.flags |= XDL_EMIT_FUNCCONTEXT;
if (pe)
xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags);
if (!diffopts)
else if (opt_arg(arg, '\0', "inter-hunk-context",
&options->interhunkcontext))
;
+ else if (!strcmp(arg, "-W"))
+ DIFF_OPT_SET(options, FUNCCONTEXT);
+ else if (!strcmp(arg, "--function-context"))
+ DIFF_OPT_SET(options, FUNCCONTEXT);
+ else if (!strcmp(arg, "--no-function-context"))
+ DIFF_OPT_CLR(options, FUNCCONTEXT);
else if ((argcount = parse_long_opt("output", av, &optarg))) {
options->file = fopen(optarg, "w");
if (!options->file)