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diff: add synonyms for -M, -C, -B

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Add new long-form options --detect-renames[=<n>], --detect-copies[=<n>],
and --break-rewrites[=[<n>][/<m>]] as synonyms for the -M, -C, and -B
options (respectively).

Signed-off-by: Kevin Ballard <kevin@sb.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Kevin Ballard
2010-09-27 16:58:26 -07:00
committed by Junio C Hamano
parent 10ae7526be
commit 37ab5156ae
2 changed files with 25 additions and 3 deletions
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25
diff.c
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@ -3059,16 +3059,19 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
}
/* renames options */
else if (!prefixcmp(arg, "-B")) {
else if (!prefixcmp(arg, "-B") || !prefixcmp(arg, "--break-rewrites=") ||
!strcmp(arg, "--break-rewrites")) {
if ((options->break_opt = diff_scoreopt_parse(arg)) == -1)
return -1;
}
else if (!prefixcmp(arg, "-M")) {
else if (!prefixcmp(arg, "-M") || !prefixcmp(arg, "--detect-renames=") ||
!strcmp(arg, "--detect-renames")) {
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
return -1;
options->detect_rename = DIFF_DETECT_RENAME;
}
else if (!prefixcmp(arg, "-C")) {
else if (!prefixcmp(arg, "-C") || !prefixcmp(arg, "--detect-copies=") ||
!strcmp(arg, "--detect-copies")) {
if (options->detect_rename == DIFF_DETECT_COPY)
DIFF_OPT_SET(options, FIND_COPIES_HARDER);
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
@ -3262,6 +3265,22 @@ static int diff_scoreopt_parse(const char *opt)
if (*opt++ != '-')
return -1;
cmd = *opt++;
if (cmd == '-') {
/* convert the long-form arguments into short-form versions */
if (!prefixcmp(opt, "break-rewrites")) {
opt += strlen("break-rewrites");
if (*opt == 0 || *opt++ == '=')
cmd = 'B';
} else if (!prefixcmp(opt, "detect-copies")) {
opt += strlen("detect-copies");
if (*opt == 0 || *opt++ == '=')
cmd = 'C';
} else if (!prefixcmp(opt, "detect-renames")) {
opt += strlen("detect-renames");
if (*opt == 0 || *opt++ == '=')
cmd = 'M';
}
}
if (cmd != 'M' && cmd != 'C' && cmd != 'B')
return -1; /* that is not a -M, -C nor -B option */