glossary: more precise definition of tree-ish (a.k.a. treeish)

diff --git a/diff.c b/diff.c
index 2747e6f72ce97e24ade88a620b4b95ae6f6b5cb3..266112ca6104450497fb9be504c2404cced595f0 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -2253,6 +2253,7 @@ static void builtin_diff(const char *name_a,
                const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
                const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
                show_submodule_summary(o->file, one ? one->path : two->path,
+                               line_prefix,
                                one->sha1, two->sha1, two->dirty_submodule,
                                meta, del, add, reset);
                return;
@@ -2583,7 +2584,7 @@ void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1,
  */
 static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file)
 {
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
        struct stat st;
        int pos, len;
 
@@ -2674,6 +2675,14 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
 int diff_populate_filespec(struct diff_filespec *s, int size_only)
 {
        int err = 0;
+       /*
+        * demote FAIL to WARN to allow inspecting the situation
+        * instead of refusing.
+        */
+       enum safe_crlf crlf_warn = (safe_crlf == SAFE_CRLF_FAIL
+                                   ? SAFE_CRLF_WARN
+                                   : safe_crlf);
+
        if (!DIFF_FILE_VALID(s))
                die("internal error: asking to populate invalid file.");
        if (S_ISDIR(s->mode))
@@ -2729,7 +2738,7 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
                /*
                 * Convert from working tree format to canonical git format
                 */
-               if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) {
+               if (convert_to_git(s->path, s->data, s->size, &buf, crlf_warn)) {
                        size_t size = 0;
                        munmap(s->data, s->size);
                        s->should_munmap = 0;
@@ -3494,6 +3503,11 @@ static int parse_submodule_opt(struct diff_options *options, const char *value)
        return 1;
 }
 
+static void enable_patch_output(int *fmt) {
+       *fmt &= ~DIFF_FORMAT_NO_OUTPUT;
+       *fmt |= DIFF_FORMAT_PATCH;
+}
+
 int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 {
        const char *arg = av[0];
@@ -3501,15 +3515,15 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
        int argcount;
 
        /* Output format options */
-       if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch"))
-               options->output_format |= DIFF_FORMAT_PATCH;
-       else if (opt_arg(arg, 'U', "unified", &options->context))
-               options->output_format |= DIFF_FORMAT_PATCH;
+       if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch")
+           || opt_arg(arg, 'U', "unified", &options->context))
+               enable_patch_output(&options->output_format);
        else if (!strcmp(arg, "--raw"))
                options->output_format |= DIFF_FORMAT_RAW;
-       else if (!strcmp(arg, "--patch-with-raw"))
-               options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW;
-       else if (!strcmp(arg, "--numstat"))
+       else if (!strcmp(arg, "--patch-with-raw")) {
+               enable_patch_output(&options->output_format);
+               options->output_format |= DIFF_FORMAT_RAW;
+       } else if (!strcmp(arg, "--numstat"))
                options->output_format |= DIFF_FORMAT_NUMSTAT;
        else if (!strcmp(arg, "--shortstat"))
                options->output_format |= DIFF_FORMAT_SHORTSTAT;
@@ -3531,13 +3545,14 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
                options->output_format |= DIFF_FORMAT_CHECKDIFF;
        else if (!strcmp(arg, "--summary"))
                options->output_format |= DIFF_FORMAT_SUMMARY;
-       else if (!strcmp(arg, "--patch-with-stat"))
-               options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT;
-       else if (!strcmp(arg, "--name-only"))
+       else if (!strcmp(arg, "--patch-with-stat")) {
+               enable_patch_output(&options->output_format);
+               options->output_format |= DIFF_FORMAT_DIFFSTAT;
+       } else if (!strcmp(arg, "--name-only"))
                options->output_format |= DIFF_FORMAT_NAME;
        else if (!strcmp(arg, "--name-status"))
                options->output_format |= DIFF_FORMAT_NAME_STATUS;
-       else if (!strcmp(arg, "-s"))
+       else if (!strcmp(arg, "-s") || !strcmp(arg, "--no-patch"))
                options->output_format |= DIFF_FORMAT_NO_OUTPUT;
        else if (!prefixcmp(arg, "--stat"))
                /* --stat, --stat-width, --stat-name-width, or --stat-count */
@@ -3590,6 +3605,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
                DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
        else if (!strcmp(arg, "--ignore-space-at-eol"))
                DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
+       else if (!strcmp(arg, "--ignore-blank-lines"))
+               DIFF_XDL_SET(options, IGNORE_BLANK_LINES);
        else if (!strcmp(arg, "--patience"))
                options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
        else if (!strcmp(arg, "--histogram"))
@@ -3608,7 +3625,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 
        /* flags options */
        else if (!strcmp(arg, "--binary")) {
-               options->output_format |= DIFF_FORMAT_PATCH;
+               enable_patch_output(&options->output_format);
                DIFF_OPT_SET(options, BINARY);
        }
        else if (!strcmp(arg, "--full-index"))
@@ -4447,7 +4464,7 @@ void diff_flush(struct diff_options *options)
            DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
                /*
                 * run diff_flush_patch for the exit status. setting
-                * options->file to /dev/null should be safe, becaue we
+                * options->file to /dev/null should be safe, because we
                 * aren't supposed to produce any output anyway.
                 */
                if (options->close_file)