in diff.c [5400:5672]
static void prep_parse_options(struct diff_options *options)
{
struct option parseopts[] = {
OPT_GROUP(N_("Diff output format options")),
OPT_BITOP('p', "patch", &options->output_format,
N_("generate patch"),
DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT),
OPT_BIT_F('s', "no-patch", &options->output_format,
N_("suppress diff output"),
DIFF_FORMAT_NO_OUTPUT, PARSE_OPT_NONEG),
OPT_BITOP('u', NULL, &options->output_format,
N_("generate patch"),
DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT),
OPT_CALLBACK_F('U', "unified", options, N_("<n>"),
N_("generate diffs with <n> lines context"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_unified),
OPT_BOOL('W', "function-context", &options->flags.funccontext,
N_("generate diffs with <n> lines context")),
OPT_BIT_F(0, "raw", &options->output_format,
N_("generate the diff in raw format"),
DIFF_FORMAT_RAW, PARSE_OPT_NONEG),
OPT_BITOP(0, "patch-with-raw", &options->output_format,
N_("synonym for '-p --raw'"),
DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW,
DIFF_FORMAT_NO_OUTPUT),
OPT_BITOP(0, "patch-with-stat", &options->output_format,
N_("synonym for '-p --stat'"),
DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT,
DIFF_FORMAT_NO_OUTPUT),
OPT_BIT_F(0, "numstat", &options->output_format,
N_("machine friendly --stat"),
DIFF_FORMAT_NUMSTAT, PARSE_OPT_NONEG),
OPT_BIT_F(0, "shortstat", &options->output_format,
N_("output only the last line of --stat"),
DIFF_FORMAT_SHORTSTAT, PARSE_OPT_NONEG),
OPT_CALLBACK_F('X', "dirstat", options, N_("<param1,param2>..."),
N_("output the distribution of relative amount of changes for each sub-directory"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_dirstat),
OPT_CALLBACK_F(0, "cumulative", options, NULL,
N_("synonym for --dirstat=cumulative"),
PARSE_OPT_NONEG | PARSE_OPT_NOARG,
diff_opt_dirstat),
OPT_CALLBACK_F(0, "dirstat-by-file", options, N_("<param1,param2>..."),
N_("synonym for --dirstat=files,param1,param2..."),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_dirstat),
OPT_BIT_F(0, "check", &options->output_format,
N_("warn if changes introduce conflict markers or whitespace errors"),
DIFF_FORMAT_CHECKDIFF, PARSE_OPT_NONEG),
OPT_BIT_F(0, "summary", &options->output_format,
N_("condensed summary such as creations, renames and mode changes"),
DIFF_FORMAT_SUMMARY, PARSE_OPT_NONEG),
OPT_BIT_F(0, "name-only", &options->output_format,
N_("show only names of changed files"),
DIFF_FORMAT_NAME, PARSE_OPT_NONEG),
OPT_BIT_F(0, "name-status", &options->output_format,
N_("show only names and status of changed files"),
DIFF_FORMAT_NAME_STATUS, PARSE_OPT_NONEG),
OPT_CALLBACK_F(0, "stat", options, N_("<width>[,<name-width>[,<count>]]"),
N_("generate diffstat"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_stat),
OPT_CALLBACK_F(0, "stat-width", options, N_("<width>"),
N_("generate diffstat with a given width"),
PARSE_OPT_NONEG, diff_opt_stat),
OPT_CALLBACK_F(0, "stat-name-width", options, N_("<width>"),
N_("generate diffstat with a given name width"),
PARSE_OPT_NONEG, diff_opt_stat),
OPT_CALLBACK_F(0, "stat-graph-width", options, N_("<width>"),
N_("generate diffstat with a given graph width"),
PARSE_OPT_NONEG, diff_opt_stat),
OPT_CALLBACK_F(0, "stat-count", options, N_("<count>"),
N_("generate diffstat with limited lines"),
PARSE_OPT_NONEG, diff_opt_stat),
OPT_CALLBACK_F(0, "compact-summary", options, NULL,
N_("generate compact summary in diffstat"),
PARSE_OPT_NOARG, diff_opt_compact_summary),
OPT_CALLBACK_F(0, "binary", options, NULL,
N_("output a binary diff that can be applied"),
PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_binary),
OPT_BOOL(0, "full-index", &options->flags.full_index,
N_("show full pre- and post-image object names on the \"index\" lines")),
OPT_COLOR_FLAG(0, "color", &options->use_color,
N_("show colored diff")),
OPT_CALLBACK_F(0, "ws-error-highlight", options, N_("<kind>"),
N_("highlight whitespace errors in the 'context', 'old' or 'new' lines in the diff"),
PARSE_OPT_NONEG, diff_opt_ws_error_highlight),
OPT_SET_INT('z', NULL, &options->line_termination,
N_("do not munge pathnames and use NULs as output field terminators in --raw or --numstat"),
0),
OPT__ABBREV(&options->abbrev),
OPT_STRING_F(0, "src-prefix", &options->a_prefix, N_("<prefix>"),
N_("show the given source prefix instead of \"a/\""),
PARSE_OPT_NONEG),
OPT_STRING_F(0, "dst-prefix", &options->b_prefix, N_("<prefix>"),
N_("show the given destination prefix instead of \"b/\""),
PARSE_OPT_NONEG),
OPT_CALLBACK_F(0, "line-prefix", options, N_("<prefix>"),
N_("prepend an additional prefix to every line of output"),
PARSE_OPT_NONEG, diff_opt_line_prefix),
OPT_CALLBACK_F(0, "no-prefix", options, NULL,
N_("do not show any source or destination prefix"),
PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_no_prefix),
OPT_INTEGER_F(0, "inter-hunk-context", &options->interhunkcontext,
N_("show context between diff hunks up to the specified number of lines"),
PARSE_OPT_NONEG),
OPT_CALLBACK_F(0, "output-indicator-new",
&options->output_indicators[OUTPUT_INDICATOR_NEW],
N_("<char>"),
N_("specify the character to indicate a new line instead of '+'"),
PARSE_OPT_NONEG, diff_opt_char),
OPT_CALLBACK_F(0, "output-indicator-old",
&options->output_indicators[OUTPUT_INDICATOR_OLD],
N_("<char>"),
N_("specify the character to indicate an old line instead of '-'"),
PARSE_OPT_NONEG, diff_opt_char),
OPT_CALLBACK_F(0, "output-indicator-context",
&options->output_indicators[OUTPUT_INDICATOR_CONTEXT],
N_("<char>"),
N_("specify the character to indicate a context instead of ' '"),
PARSE_OPT_NONEG, diff_opt_char),
OPT_GROUP(N_("Diff rename options")),
OPT_CALLBACK_F('B', "break-rewrites", &options->break_opt, N_("<n>[/<m>]"),
N_("break complete rewrite changes into pairs of delete and create"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_break_rewrites),
OPT_CALLBACK_F('M', "find-renames", options, N_("<n>"),
N_("detect renames"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_find_renames),
OPT_SET_INT_F('D', "irreversible-delete", &options->irreversible_delete,
N_("omit the preimage for deletes"),
1, PARSE_OPT_NONEG),
OPT_CALLBACK_F('C', "find-copies", options, N_("<n>"),
N_("detect copies"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_find_copies),
OPT_BOOL(0, "find-copies-harder", &options->flags.find_copies_harder,
N_("use unmodified files as source to find copies")),
OPT_SET_INT_F(0, "no-renames", &options->detect_rename,
N_("disable rename detection"),
0, PARSE_OPT_NONEG),
OPT_BOOL(0, "rename-empty", &options->flags.rename_empty,
N_("use empty blobs as rename source")),
OPT_CALLBACK_F(0, "follow", options, NULL,
N_("continue listing the history of a file beyond renames"),
PARSE_OPT_NOARG, diff_opt_follow),
OPT_INTEGER('l', NULL, &options->rename_limit,
N_("prevent rename/copy detection if the number of rename/copy targets exceeds given limit")),
OPT_GROUP(N_("Diff algorithm options")),
OPT_BIT(0, "minimal", &options->xdl_opts,
N_("produce the smallest possible diff"),
XDF_NEED_MINIMAL),
OPT_BIT_F('w', "ignore-all-space", &options->xdl_opts,
N_("ignore whitespace when comparing lines"),
XDF_IGNORE_WHITESPACE, PARSE_OPT_NONEG),
OPT_BIT_F('b', "ignore-space-change", &options->xdl_opts,
N_("ignore changes in amount of whitespace"),
XDF_IGNORE_WHITESPACE_CHANGE, PARSE_OPT_NONEG),
OPT_BIT_F(0, "ignore-space-at-eol", &options->xdl_opts,
N_("ignore changes in whitespace at EOL"),
XDF_IGNORE_WHITESPACE_AT_EOL, PARSE_OPT_NONEG),
OPT_BIT_F(0, "ignore-cr-at-eol", &options->xdl_opts,
N_("ignore carrier-return at the end of line"),
XDF_IGNORE_CR_AT_EOL, PARSE_OPT_NONEG),
OPT_BIT_F(0, "ignore-blank-lines", &options->xdl_opts,
N_("ignore changes whose lines are all blank"),
XDF_IGNORE_BLANK_LINES, PARSE_OPT_NONEG),
OPT_CALLBACK_F('I', "ignore-matching-lines", options, N_("<regex>"),
N_("ignore changes whose all lines match <regex>"),
0, diff_opt_ignore_regex),
OPT_BIT(0, "indent-heuristic", &options->xdl_opts,
N_("heuristic to shift diff hunk boundaries for easy reading"),
XDF_INDENT_HEURISTIC),
OPT_CALLBACK_F(0, "patience", options, NULL,
N_("generate diff using the \"patience diff\" algorithm"),
PARSE_OPT_NONEG | PARSE_OPT_NOARG,
diff_opt_patience),
OPT_BITOP(0, "histogram", &options->xdl_opts,
N_("generate diff using the \"histogram diff\" algorithm"),
XDF_HISTOGRAM_DIFF, XDF_DIFF_ALGORITHM_MASK),
OPT_CALLBACK_F(0, "diff-algorithm", options, N_("<algorithm>"),
N_("choose a diff algorithm"),
PARSE_OPT_NONEG, diff_opt_diff_algorithm),
OPT_CALLBACK_F(0, "anchored", options, N_("<text>"),
N_("generate diff using the \"anchored diff\" algorithm"),
PARSE_OPT_NONEG, diff_opt_anchored),
OPT_CALLBACK_F(0, "word-diff", options, N_("<mode>"),
N_("show word diff, using <mode> to delimit changed words"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_word_diff),
OPT_CALLBACK_F(0, "word-diff-regex", options, N_("<regex>"),
N_("use <regex> to decide what a word is"),
PARSE_OPT_NONEG, diff_opt_word_diff_regex),
OPT_CALLBACK_F(0, "color-words", options, N_("<regex>"),
N_("equivalent to --word-diff=color --word-diff-regex=<regex>"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_color_words),
OPT_CALLBACK_F(0, "color-moved", options, N_("<mode>"),
N_("moved lines of code are colored differently"),
PARSE_OPT_OPTARG, diff_opt_color_moved),
OPT_CALLBACK_F(0, "color-moved-ws", options, N_("<mode>"),
N_("how white spaces are ignored in --color-moved"),
0, diff_opt_color_moved_ws),
OPT_GROUP(N_("Other diff options")),
OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"),
N_("when run from subdir, exclude changes outside and show relative paths"),
PARSE_OPT_OPTARG,
diff_opt_relative),
OPT_BOOL('a', "text", &options->flags.text,
N_("treat all files as text")),
OPT_BOOL('R', NULL, &options->flags.reverse_diff,
N_("swap two inputs, reverse the diff")),
OPT_BOOL(0, "exit-code", &options->flags.exit_with_status,
N_("exit with 1 if there were differences, 0 otherwise")),
OPT_BOOL(0, "quiet", &options->flags.quick,
N_("disable all output of the program")),
OPT_BOOL(0, "ext-diff", &options->flags.allow_external,
N_("allow an external diff helper to be executed")),
OPT_CALLBACK_F(0, "textconv", options, NULL,
N_("run external text conversion filters when comparing binary files"),
PARSE_OPT_NOARG, diff_opt_textconv),
OPT_CALLBACK_F(0, "ignore-submodules", options, N_("<when>"),
N_("ignore changes to submodules in the diff generation"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_ignore_submodules),
OPT_CALLBACK_F(0, "submodule", options, N_("<format>"),
N_("specify how differences in submodules are shown"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_submodule),
OPT_SET_INT_F(0, "ita-invisible-in-index", &options->ita_invisible_in_index,
N_("hide 'git add -N' entries from the index"),
1, PARSE_OPT_NONEG),
OPT_SET_INT_F(0, "ita-visible-in-index", &options->ita_invisible_in_index,
N_("treat 'git add -N' entries as real in the index"),
0, PARSE_OPT_NONEG),
OPT_CALLBACK_F('S', NULL, options, N_("<string>"),
N_("look for differences that change the number of occurrences of the specified string"),
0, diff_opt_pickaxe_string),
OPT_CALLBACK_F('G', NULL, options, N_("<regex>"),
N_("look for differences that change the number of occurrences of the specified regex"),
0, diff_opt_pickaxe_regex),
OPT_BIT_F(0, "pickaxe-all", &options->pickaxe_opts,
N_("show all changes in the changeset with -S or -G"),
DIFF_PICKAXE_ALL, PARSE_OPT_NONEG),
OPT_BIT_F(0, "pickaxe-regex", &options->pickaxe_opts,
N_("treat <string> in -S as extended POSIX regular expression"),
DIFF_PICKAXE_REGEX, PARSE_OPT_NONEG),
OPT_FILENAME('O', NULL, &options->orderfile,
N_("control the order in which files appear in the output")),
OPT_CALLBACK_F(0, "rotate-to", options, N_("<path>"),
N_("show the change in the specified path first"),
PARSE_OPT_NONEG, diff_opt_rotate_to),
OPT_CALLBACK_F(0, "skip-to", options, N_("<path>"),
N_("skip the output to the specified path"),
PARSE_OPT_NONEG, diff_opt_rotate_to),
OPT_CALLBACK_F(0, "find-object", options, N_("<object-id>"),
N_("look for differences that change the number of occurrences of the specified object"),
PARSE_OPT_NONEG, diff_opt_find_object),
OPT_CALLBACK_F(0, "diff-filter", options, N_("[(A|C|D|M|R|T|U|X|B)...[*]]"),
N_("select files by diff type"),
PARSE_OPT_NONEG, diff_opt_diff_filter),
{ OPTION_CALLBACK, 0, "output", options, N_("<file>"),
N_("output to a specific file"),
PARSE_OPT_NONEG, NULL, 0, diff_opt_output },
OPT_END()
};
ALLOC_ARRAY(options->parseopts, ARRAY_SIZE(parseopts));
memcpy(options->parseopts, parseopts, sizeof(parseopts));
}