15 files changed, 285 insertions, 89 deletions

diff --git a/Makefile b/Makefile
index 2e51c31..3c7ec07 100644
--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,13 @@
 CGIT_VERSION = v0.8.1
 CGIT_SCRIPT_NAME = cgit.cgi
 CGIT_SCRIPT_PATH = /var/www/htdocs/cgit
 CGIT_CONFIG = /etc/cgitrc
 CACHE_ROOT = /var/cache/cgit
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 1.6.0.3
+GIT_VER = 1.6.1
 GIT_URL = http://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.bz2
 
 # Define NO_STRCASESTR if you don't have strcasestr.
 #
 # Define NEEDS_LIBICONV if linking with libc is not enough (eg. Darwin).
 #
diff --git a/cgit.c b/cgit.c
index c82587b..166fbc6 100644
--- a/cgit.c
+++ b/cgit.c
@@ -151,12 +151,16 @@ static void querystring_cb(const char *name, const char *value)
         } else if (!strcmp(name, "path")) {
                 ctx.qry.path = trim_end(value, '/');
         } else if (!strcmp(name, "name")) {
                 ctx.qry.name = xstrdup(value);
         } else if (!strcmp(name, "mimetype")) {
                 ctx.qry.mimetype = xstrdup(value);
+        } else if (!strcmp(name, "s")){
+                ctx.qry.sort = xstrdup(value);
+        } else if (!strcmp(name, "showmsg")) {
+                ctx.qry.showmsg = atoi(value);
         }
 }
 
 static void prepare_context(struct cgit_context *ctx)
 {
         memset(ctx, 0, sizeof(ctx));
diff --git a/cgit.css b/cgit.css
index a37d218..7928c2f 100644
--- a/cgit.css
+++ b/cgit.css
@@ -117,12 +117,16 @@ table.list {
 }
 
 table.list tr {
         background: white;
 }
 
+table.list tr.logheader {
+        background: #eee;
+}
+
 table.list tr:hover {
         background: #eee;
 }
 
 table.list tr.nohover:hover {
         background: white;
@@ -140,12 +144,23 @@ table.list th {
 
 table.list td {
         border: none;
         padding: 0.1em 0.5em 0.1em 0.5em;
 }
 
+table.list td.logsubject {
+        font-family: monospace;
+        font-weight: bold;
+}
+
+table.list td.logmsg {
+        font-family: monospace;
+        white-space: pre;
+        padding: 1em 0em 2em 0em;
+}
+
 table.list td a {
         color: black;
 }
 
 table.list td a:hover {
         color: #00f;
diff --git a/cgit.h b/cgit.h
index 92f0c5a..cb2f176 100644
--- a/cgit.h
+++ b/cgit.h
@@ -58,12 +58,13 @@ struct cgit_repo {
         char *module_link;
         char *readme;
         char *clone_url;
         int snapshots;
         int enable_log_filecount;
         int enable_log_linecount;
+        time_t mtime;
 };
 
 struct cgit_repolist {
         int length;
         int count;
         struct cgit_repo *repos;
@@ -118,12 +119,14 @@ struct cgit_query {
         char *path;
         char *name;
         char *mimetype;
         char *url;
         int   ofs;
         int nohead;
+        char *sort;
+        int showmsg;
 };
 
 struct cgit_config {
         char *agefile;
         char *cache_root;
         char *clone_prefix;
diff --git a/cmd.c b/cmd.c
index 5b3c14c..8914fa5 100644
--- a/cmd.c
+++ b/cmd.c
@@ -101,14 +101,13 @@ static void refs_fn(struct cgit_context *ctx)
 {
         cgit_print_refs();
 }
 
 static void snapshot_fn(struct cgit_context *ctx)
 {
-        cgit_print_snapshot(ctx->qry.head, ctx->qry.sha1,
-                            cgit_repobasename(ctx->repo->url), ctx->qry.path,
+        cgit_print_snapshot(ctx->qry.head, ctx->qry.sha1, ctx->qry.path,
                             ctx->repo->snapshots, ctx->qry.nohead);
 }
 
 static void summary_fn(struct cgit_context *ctx)
 {
         cgit_print_summary();
diff --git a/git b/git
-Subproject 031e6c898f61db1ae0c0be641eac6532c1000d5
+Subproject 8104ebfe8276657ee803cca7eb8665a78cf3ef8
diff --git a/shared.c b/shared.c
index f5875e4..a764c4d 100644
--- a/shared.c
+++ b/shared.c
@@ -57,12 +57,13 @@ struct cgit_repo *cgit_add_repo(const char *url)
         ret->defbranch = "master";
         ret->snapshots = ctx.cfg.snapshots;
         ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
         ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
         ret->module_link = ctx.cfg.module_link;
         ret->readme = NULL;
+        ret->mtime = -1;
         return ret;
 }
 
 struct cgit_repo *cgit_get_repoinfo(const char *url)
 {
         int i;
@@ -263,16 +264,18 @@ int cgit_diff_files(const unsigned char *old_sha1,
         xdemitconf_t emit_params;
         xdemitcb_t emit_cb;
 
         if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
                 return 1;
 
+        memset(&diff_params, 0, sizeof(diff_params));
+        memset(&emit_params, 0, sizeof(emit_params));
+        memset(&emit_cb, 0, sizeof(emit_cb));
         diff_params.flags = XDF_NEED_MINIMAL;
         emit_params.ctxlen = 3;
         emit_params.flags = XDL_EMIT_FUNCNAMES;
-        emit_params.find_func = NULL;
         emit_cb.outf = filediff_cb;
         emit_cb.priv = fn;
         xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
         return 0;
 }
 
diff --git a/ui-log.c b/ui-log.c
index d212984..2f90778 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -32,21 +32,24 @@ void inspect_files(struct diff_filepair *pair)
 }
 
 void print_commit(struct commit *commit)
 {
         struct commitinfo *info;
         char *tmp;
+        int cols = 2;
 
         info = cgit_parse_commit(commit);
-        html("<tr><td>");
+        htmlf("<tr%s><td>",
+                ctx.qry.showmsg ? " class='logheader'" : "");
         tmp = fmt("id=%s", sha1_to_hex(commit->object.sha1));
         tmp = cgit_pageurl(ctx.repo->url, "commit", tmp);
         html_link_open(tmp, NULL, NULL);
         cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
         html_link_close();
-        html("</td><td>");
+        htmlf("</td><td%s>",
+                ctx.qry.showmsg ? " class='logsubject'" : "");
         cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
                          sha1_to_hex(commit->object.sha1));
         html("</td><td>");
         html_txt(info->author);
         if (ctx.repo->enable_log_filecount) {
                 files = 0;
@@ -58,12 +61,23 @@ void print_commit(struct commit *commit)
                 if (ctx.repo->enable_log_linecount) {
                         html("</td><td>");
                         htmlf("-%d/+%d", rem_lines, add_lines);
                 }
         }
         html("</td></tr>\n");
+        if (ctx.qry.showmsg) {
+                if (ctx.repo->enable_log_filecount) {
+                        cols++;
+                        if (ctx.repo->enable_log_linecount)
+                                cols++;
+                }
+                htmlf("<tr class='nohover'><td/><td colspan='%d' class='logmsg'>",
+                        cols);
+                html_txt(info->msg);
+                html("</td></tr>\n");
+        }
         cgit_free_commitinfo(info);
 }
 
 static const char *disambiguate_ref(const char *ref)
 {
         unsigned char sha1[20];
@@ -110,14 +124,21 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
         prepare_revision_walk(&rev);
 
         if (pager)
                 html("<table class='list nowrap'>");
 
         html("<tr class='nohover'><th class='left'>Age</th>"
-             "<th class='left'>Commit message</th>"
-             "<th class='left'>Author</th>");
+              "<th class='left'>Commit message");
+        if (pager) {
+                html(" (");
+                cgit_log_link("toggle", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+                              ctx.qry.path, ctx.qry.ofs, ctx.qry.grep,
+                              ctx.qry.search, ctx.qry.showmsg ? 0 : 1);
+                html(")");
+        }
+        html("</th><th class='left'>Author</th>");
         if (ctx.repo->enable_log_filecount) {
                 html("<th class='left'>Files</th>");
                 columns++;
                 if (ctx.repo->enable_log_linecount) {
                         html("<th class='left'>Lines</th>");
                         columns++;
@@ -146,23 +167,23 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                 htmlf("</table><div class='pager'>",
                      columns);
                 if (ofs > 0) {
                         cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
                                       ctx.qry.sha1, ctx.qry.path,
                                       ofs - cnt, ctx.qry.grep,
-                                      ctx.qry.search);
+                                      ctx.qry.search, ctx.qry.showmsg);
                         html("&nbsp;");
                 }
                 if ((commit = get_revision(&rev)) != NULL) {
                         cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
                                       ctx.qry.sha1, ctx.qry.path,
                                       ofs + cnt, ctx.qry.grep,
-                                      ctx.qry.search);
+                                      ctx.qry.search, ctx.qry.showmsg);
                 }
                 html("</div>");
         } else if ((commit = get_revision(&rev)) != NULL) {
                 html("<tr class='nohover'><td colspan='3'>");
                 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL, NULL, 0,
-                              NULL, NULL);
+                              NULL, NULL, ctx.qry.showmsg);
                 html("</td></tr>\n");
         }
 }
diff --git a/ui-refs.c b/ui-refs.c
index 32e0429..d61ee7c 100644
--- a/ui-refs.c
+++ b/ui-refs.c
@@ -55,13 +55,14 @@ static int print_branch(struct refinfo *ref)
         struct commitinfo *info = ref->commit;
         char *name = (char *)ref->refname;
 
         if (!info)
                 return 1;
         html("<tr><td>");
-        cgit_log_link(name, NULL, NULL, name, NULL, NULL, 0, NULL, NULL);
+        cgit_log_link(name, NULL, NULL, name, NULL, NULL, 0, NULL, NULL,
+                      ctx.qry.showmsg);
         html("</td><td>");
 
         if (ref->object->type == OBJ_COMMIT) {
                 cgit_commit_link(info->subject, NULL, NULL, name, NULL);
                 html("</td><td>");
                 html_txt(info->author);
@@ -75,18 +76,43 @@ static int print_branch(struct refinfo *ref)
         return 0;
 }
 
 static void print_tag_header()
 {
         html("<tr class='nohover'><th class='left'>Tag</th>"
-             "<th class='left'>Reference</th>"
+             "<th class='left'>Download</th>"
              "<th class='left'>Author</th>"
              "<th class='left' colspan='2'>Age</th></tr>\n");
         header = 1;
 }
 
+static void print_tag_downloads(const struct cgit_repo *repo, const char *ref)
+{
+        const struct cgit_snapshot_format* f;
+            char *filename;
+        const char *basename;
+
+        if (!ref || strlen(ref) < 2)
+                return;
+
+        basename = cgit_repobasename(repo->url);
+        if (prefixcmp(ref, basename) != 0) {
+                if ((ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]))
+                        ref++;
+                if (isdigit(ref[0]))
+                        ref = xstrdup(fmt("%s-%s", basename, ref));
+        }
+
+        for (f = cgit_snapshot_formats; f->suffix; f++) {
+                if (!(repo->snapshots & f->bit))
+                        continue;
+                filename = fmt("%s%s", ref, f->suffix);
+                cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
+                html("&nbsp;&nbsp;");
+        }
+}
 static int print_tag(struct refinfo *ref)
 {
         struct tag *tag;
         struct taginfo *info;
         char *name = (char *)ref->refname;
 
@@ -95,13 +121,16 @@ static int print_tag(struct refinfo *ref)
                 info = ref->tag;
                 if (!tag || !info)
                         return 1;
                 html("<tr><td>");
                 cgit_tag_link(name, NULL, NULL, ctx.qry.head, name);
                 html("</td><td>");
-                cgit_object_link(tag->tagged);
+                if (ctx.repo->snapshots && (tag->tagged->type == OBJ_COMMIT))
+                        print_tag_downloads(ctx.repo, name);
+                else
+                        cgit_object_link(tag->tagged);
                 html("</td><td>");
                 if (info->tagger)
                         html(info->tagger);
                 html("</td><td colspan='2'>");
                 if (info->tagger_date > 0)
                         cgit_print_age(info->tagger_date, -1, NULL);
@@ -109,13 +138,16 @@ static int print_tag(struct refinfo *ref)
         } else {
                 if (!header)
                         print_tag_header();
                 html("<tr><td>");
                 html_txt(name);
                 html("</td><td>");
-                cgit_object_link(ref->object);
+                if (ctx.repo->snapshots && (tag->tagged->type == OBJ_COMMIT))
+                        print_tag_downloads(ctx.repo, name);
+                else
+                        cgit_object_link(ref->object);
                 html("</td></tr>\n");
         }
         return 0;
 }
 
 static void print_refs_link(char *path)
diff --git a/ui-repolist.c b/ui-repolist.c
index 2324273..2c13d50 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -29,27 +29,44 @@ time_t read_agefile(char *path)
         if (parse_date(buf, buf2, sizeof(buf2)))
                 return strtoul(buf2, NULL, 10);
         else
                 return 0;
 }
 
-static void print_modtime(struct cgit_repo *repo)
+static int get_repo_modtime(const struct cgit_repo *repo, time_t *mtime)
 {
         char *path;
         struct stat s;
+        struct cgit_repo *r = (struct cgit_repo *)repo;
 
+        if (repo->mtime != -1) {
+                *mtime = repo->mtime;
+                return 1;
+        }
         path = fmt("%s/%s", repo->path, ctx.cfg.agefile);
         if (stat(path, &s) == 0) {
-                cgit_print_age(read_agefile(path), -1, NULL);
-                return;
+                *mtime = read_agefile(path);
+                r->mtime = *mtime;
+                return 1;
         }
 
         path = fmt("%s/refs/heads/%s", repo->path, repo->defbranch);
-        if (stat(path, &s) != 0)
-                return;
-        cgit_print_age(s.st_mtime, -1, NULL);
+        if (stat(path, &s) == 0)
+                *mtime = s.st_mtime;
+        else
+                *mtime = 0;
+
+        r->mtime = *mtime;
+        return (r->mtime != 0);
+}
+
+static void print_modtime(struct cgit_repo *repo)
+{
+        time_t t;
+        if (get_repo_modtime(repo, &t))
+                cgit_print_age(t, -1, NULL);
 }
 
 int is_match(struct cgit_repo *repo)
 {
         if (!ctx.qry.search)
                 return 1;
@@ -70,19 +87,29 @@ int is_in_url(struct cgit_repo *repo)
                 return 1;
         if (repo->url && !prefixcmp(repo->url, ctx.qry.url))
                 return 1;
         return 0;
 }
 
+void print_sort_header(const char *title, const char *sort)
+{
+        htmlf("<th class='left'><a href='./?s=%s", sort);
+        if (ctx.qry.search) {
+                html("&q=");
+                html_url_arg(ctx.qry.search);
+        }
+        htmlf("'>%s</a></th>", title);
+}
+
 void print_header(int columns)
 {
-        html("<tr class='nohover'>"
-             "<th class='left'>Name</th>"
-             "<th class='left'>Description</th>"
-             "<th class='left'>Owner</th>"
-             "<th class='left'>Idle</th>");
+        html("<tr class='nohover'>");
+        print_sort_header("Name", "name");
+        print_sort_header("Description", "desc");
+        print_sort_header("Owner", "owner");
+        print_sort_header("Idle", "idle");
         if (ctx.cfg.enable_index_links)
                 html("<th class='left'>Links</th>");
         html("</tr>\n");
 }
 
 
@@ -93,52 +120,132 @@ void print_pager(int items, int pagelen, char *search)
         for(i = 0; i * pagelen < items; i++)
                 cgit_index_link(fmt("[%d]", i+1), fmt("Page %d", i+1), NULL,
                                 search, i * pagelen);
         html("</div>");
 }
 
+static int cmp(const char *s1, const char *s2)
+{
+        if (s1 && s2)
+                return strcmp(s1, s2);
+        if (s1 && !s2)
+                return -1;
+        if (s2 && !s1)
+                return 1;
+        return 0;
+}
+
+static int sort_name(const void *a, const void *b)
+{
+        const struct cgit_repo *r1 = a;
+        const struct cgit_repo *r2 = b;
+
+        return cmp(r1->name, r2->name);
+}
+
+static int sort_desc(const void *a, const void *b)
+{
+        const struct cgit_repo *r1 = a;
+        const struct cgit_repo *r2 = b;
+
+        return cmp(r1->desc, r2->desc);
+}
+
+static int sort_owner(const void *a, const void *b)
+{
+        const struct cgit_repo *r1 = a;
+        const struct cgit_repo *r2 = b;
+
+        return cmp(r1->owner, r2->owner);
+}
+
+static int sort_idle(const void *a, const void *b)
+{
+        const struct cgit_repo *r1 = a;
+        const struct cgit_repo *r2 = b;
+        time_t t1, t2;
+
+        t1 = t2 = 0;
+        get_repo_modtime(r1, &t1);
+        get_repo_modtime(r2, &t2);
+        return t2 - t1;
+}
+
+struct sortcolumn {
+        const char *name;
+        int (*fn)(const void *a, const void *b);
+};
+
+struct sortcolumn sortcolumn[] = {
+        {"name", sort_name},
+        {"desc", sort_desc},
+        {"owner", sort_owner},
+        {"idle", sort_idle},
+        {NULL, NULL}
+};
+
+int sort_repolist(char *field)
+{
+        struct sortcolumn *column;
+
+        for (column = &sortcolumn[0]; column->name; column++) {
+                if (strcmp(field, column->name))
+                        continue;
+                qsort(cgit_repolist.repos, cgit_repolist.count,
+                        sizeof(struct cgit_repo), column->fn);
+                return 1;
+        }
+        return 0;
+}
+
+
 void cgit_print_repolist()
 {
         int i, columns = 4, hits = 0, header = 0;
         char *last_group = NULL;
+        int sorted = 0;
 
         if (ctx.cfg.enable_index_links)
                 columns++;
 
         ctx.page.title = ctx.cfg.root_title;
         cgit_print_http_headers(&ctx);
         cgit_print_docstart(&ctx);
         cgit_print_pageheader(&ctx);
 
         if (ctx.cfg.index_header)
                 html_include(ctx.cfg.index_header);
 
+        if(ctx.qry.sort)
+                sorted = sort_repolist(ctx.qry.sort);
+
         html("<table summary='repository list' class='list nowrap'>");
         for (i=0; i<cgit_repolist.count; i++) {
                 ctx.repo = &cgit_repolist.repos[i];
                 if (!(is_match(ctx.repo) && is_in_url(ctx.repo)))
                         continue;
                 hits++;
                 if (hits <= ctx.qry.ofs)
                         continue;
                 if (hits > ctx.qry.ofs + ctx.cfg.max_repo_count)
                         continue;
                 if (!header++)
                         print_header(columns);
-                if ((last_group == NULL && ctx.repo->group != NULL) ||
+                if (!sorted &&
+                    ((last_group == NULL && ctx.repo->group != NULL) ||
                     (last_group != NULL && ctx.repo->group == NULL) ||
                     (last_group != NULL && ctx.repo->group != NULL &&
-                     strcmp(ctx.repo->group, last_group))) {
+                     strcmp(ctx.repo->group, last_group)))) {
                         htmlf("<tr class='nohover'><td colspan='%d' class='repogroup'>",
                               columns);
                         html_txt(ctx.repo->group);
                         html("</td></tr>");
                         last_group = ctx.repo->group;
                 }
                 htmlf("<tr><td class='%s'>",
-                      ctx.repo->group ? "sublevel-repo" : "toplevel-repo");
+                      !sorted && ctx.repo->group ? "sublevel-repo" : "toplevel-repo");
                 cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
                 html("</td><td>");
                 html_link_open(cgit_repourl(ctx.repo->url), NULL, NULL);
                 html_ntxt(ctx.cfg.max_repodesc_len, ctx.repo->desc);
                 html_link_close();
                 html("</td><td>");
@@ -147,13 +254,13 @@ void cgit_print_repolist()
                 print_modtime(ctx.repo);
                 html("</td>");
                 if (ctx.cfg.enable_index_links) {
                         html("<td>");
                         cgit_summary_link("summary", NULL, "button", NULL);
                         cgit_log_link("log", NULL, "button", NULL, NULL, NULL,
-                                      0, NULL, NULL);
+                                      0, NULL, NULL, ctx.qry.showmsg);
                         cgit_tree_link("tree", NULL, "button", NULL, NULL, NULL);
                         html("</td>");
                 }
                 html("</tr>\n");
         }
         html("</table>");
diff --git a/ui-shared.c b/ui-shared.c
index 224e5f3..95dfeb4 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -278,13 +278,14 @@ void cgit_plain_link(char *name, char *title, char *class, char *head,
                      char *rev, char *path)
 {
         reporevlink("plain", name, title, class, head, rev, path);
 }
 
 void cgit_log_link(char *name, char *title, char *class, char *head,
-                   char *rev, char *path, int ofs, char *grep, char *pattern)
+                   char *rev, char *path, int ofs, char *grep, char *pattern,
+                   int showmsg)
 {
         char *delim;
 
         delim = repolink(title, class, "log", head, path);
         if (rev && strcmp(rev, ctx.qry.head)) {
                 html(delim);
@@ -302,12 +303,17 @@ void cgit_log_link(char *name, char *title, char *class, char *head,
                 html_url_arg(pattern);
         }
         if (ofs > 0) {
                 html(delim);
                 html("ofs=");
                 htmlf("%d", ofs);
+                delim = "&";
+        }
+        if (showmsg) {
+                html(delim);
+                html("showmsg=1");
         }
         html("'>");
         html_txt(name);
         html("</a>");
 }
 
@@ -362,27 +368,29 @@ void cgit_patch_link(char *name, char *title, char *class, char *head,
 {
         reporevlink("patch", name, title, class, head, rev, NULL);
 }
 
 void cgit_object_link(struct object *obj)
 {
-        char *page, *rev, *name;
+        char *page, *shortrev, *fullrev, *name;
 
+        fullrev = sha1_to_hex(obj->sha1);
+        shortrev = xstrdup(fullrev);
+        shortrev[10] = '\0';
         if (obj->type == OBJ_COMMIT) {
-                cgit_commit_link(fmt("commit %s", sha1_to_hex(obj->sha1)), NULL, NULL,
-                                 ctx.qry.head, sha1_to_hex(obj->sha1));
+                cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
+                                 ctx.qry.head, fullrev);
                 return;
         } else if (obj->type == OBJ_TREE)
                 page = "tree";
         else if (obj->type == OBJ_TAG)
                 page = "tag";
         else
                 page = "blob";
-        rev = sha1_to_hex(obj->sha1);
-        name = fmt("%s %s", typename(obj->type), rev);
-        reporevlink(page, name, NULL, NULL, ctx.qry.head, rev, NULL);
+        name = fmt("%s %s...", typename(obj->type), shortrev);
+        reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 }
 
 void cgit_print_date(time_t secs, char *format, int local_time)
 {
         char buf[64];
         struct tm *time;
@@ -565,12 +573,14 @@ void add_hidden_formfields(int incl_head, int incl_search, char *page)
                 html_hidden("h", ctx.qry.head);
 
         if (ctx.qry.sha1)
                 html_hidden("id", ctx.qry.sha1);
         if (ctx.qry.sha2)
                 html_hidden("id2", ctx.qry.sha2);
+        if (ctx.qry.showmsg)
+                html_hidden("showmsg", "1");
 
         if (incl_search) {
                 if (ctx.qry.grep)
                         html_hidden("qt", ctx.qry.grep);
                 if (ctx.qry.search)
                         html_hidden("q", ctx.qry.search);
@@ -631,13 +641,13 @@ void cgit_print_pageheader(struct cgit_context *ctx)
         if (ctx->repo) {
                 cgit_summary_link("summary", NULL, hc(cmd, "summary"),
                                   ctx->qry.head);
                 cgit_refs_link("refs", NULL, hc(cmd, "refs"), ctx->qry.head,
                                ctx->qry.sha1, NULL);
                 cgit_log_link("log", NULL, hc(cmd, "log"), ctx->qry.head,
-                              NULL, NULL, 0, NULL, NULL);
+                              NULL, NULL, 0, NULL, NULL, ctx->qry.showmsg);
                 cgit_tree_link("tree", NULL, hc(cmd, "tree"), ctx->qry.head,
                                ctx->qry.sha1, NULL);
                 cgit_commit_link("commit", NULL, hc(cmd, "commit"),
                                  ctx->qry.head, ctx->qry.sha1);
                 cgit_diff_link("diff", NULL, hc(cmd, "diff"), ctx->qry.head,
                                ctx->qry.sha1, ctx->qry.sha2, NULL);
@@ -704,11 +714,10 @@ void cgit_print_snapshot_links(const char *repo, const char *head,
 
         for (f = cgit_snapshot_formats; f->suffix; f++) {
                 if (!(snapshots & f->bit))
                         continue;
                 filename = fmt("%s-%s%s", cgit_repobasename(repo), hex,
                                f->suffix);
-                cgit_snapshot_link(filename, NULL, NULL, (char *)head,
-                                   (char *)hex, filename);
+                cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
                 html("<br/>");
         }
 }
diff --git a/ui-shared.h b/ui-shared.h
index 3c8a6d0..2ab53ae 100644
--- a/ui-shared.h
+++ b/ui-shared.h
@@ -16,13 +16,13 @@ extern void cgit_tag_link(char *name, char *title, char *class, char *head,
 extern void cgit_tree_link(char *name, char *title, char *class, char *head,
                            char *rev, char *path);
 extern void cgit_plain_link(char *name, char *title, char *class, char *head,
                             char *rev, char *path);
 extern void cgit_log_link(char *name, char *title, char *class, char *head,
                           char *rev, char *path, int ofs, char *grep,
-                          char *pattern);
+                          char *pattern, int showmsg);
 extern void cgit_commit_link(char *name, char *title, char *class, char *head,
                              char *rev);
 extern void cgit_patch_link(char *name, char *title, char *class, char *head,
                             char *rev);
 extern void cgit_refs_link(char *name, char *title, char *class, char *head,
                            char *rev, char *path);
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 9c4d086..6f09151 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -111,78 +111,82 @@ static int make_snapshot(const struct cgit_snapshot_format *format,
         ctx.page.filename = xstrdup(filename);
         cgit_print_http_headers(&ctx);
         format->write_func(&args);
         return 0;
 }
 
-char *dwim_filename = NULL;
-const char *dwim_refname = NULL;
-
-static int ref_cb(const char *refname, const unsigned char *sha1, int flags,
-                  void *cb_data)
-{
-        const char *r = refname;
-        while (r && *r) {
-                fprintf(stderr, "  cmp %s with %s:", dwim_filename, r);
-                if (!strcmp(dwim_filename, r)) {
-                        fprintf(stderr, "MATCH!\n");
-                        dwim_refname = refname;
-                        return 1;
-                }
-                fprintf(stderr, "no match\n");
-                if (isdigit(*r))
-                        break;
-                r++;
-        }
-        return 0;
-}
-
-/* Try to guess the requested revision by combining repo name and tag name
- * and comparing this to the requested snapshot name. E.g. the requested
- * snapshot is "cgit-0.7.2.tar.gz" while repo name is "cgit" and tag name
- * is "v0.7.2". First, the reponame is stripped off, leaving "-0.7.2.tar.gz".
- * Next, any '-' and '_' characters are stripped, leaving "0.7.2.tar.gz".
- * Finally, the requested format suffix is removed and we end up with "0.7.2".
- * Then we test each tag against this dwimmed filename, and for each tag
- * we even try to remove any leading characters which are non-digits. I.e.
- * we first compare with "v0.7.2", then with "0.7.2" and we've got a match.
+/* Try to guess the requested revision from the requested snapshot name.
+ * First the format extension is stripped, e.g. "cgit-0.7.2.tar.gz" become
+ * "cgit-0.7.2". If this is a valid commit object name we've got a winner.
+ * Otherwise, if the snapshot name has a prefix matching the result from
+ * repo_basename(), we strip the basename and any following '-' and '_'
+ * characters ("cgit-0.7.2" -> "0.7.2") and check the resulting name once
+ * more. If this still isn't a valid commit object name, we check if pre-
+ * pending a 'v' to the remaining snapshot name ("0.7.2" -> "v0.7.2") gives
+ * us something valid.
  */
 static const char *get_ref_from_filename(const char *url, const char *filename,
-                                         const struct cgit_snapshot_format *fmt)
+                                         const struct cgit_snapshot_format *format)
 {
-        const char *reponame = cgit_repobasename(url);
-        fprintf(stderr, "reponame=%s, filename=%s\n", reponame, filename);
-        if (prefixcmp(filename, reponame))
-                return NULL;
-        filename += strlen(reponame);
-        while (filename && (*filename == '-' || *filename == '_'))
-                filename++;
-        dwim_filename = xstrdup(filename);
-        dwim_filename[strlen(filename) - strlen(fmt->suffix)] = '\0';
-        for_each_tag_ref(ref_cb, NULL);
-        return dwim_refname;
+        const char *reponame;
+        unsigned char sha1[20];
+        char *snapshot;
+
+        snapshot = xstrdup(filename);
+        snapshot[strlen(snapshot) - strlen(format->suffix)] = '\0';
+        fprintf(stderr, "snapshot=%s\n", snapshot);
+
+        if (get_sha1(snapshot, sha1) == 0)
+                return snapshot;
+
+        reponame = cgit_repobasename(url);
+        fprintf(stderr, "reponame=%s\n", reponame);
+        if (prefixcmp(snapshot, reponame) == 0) {
+                snapshot += strlen(reponame);
+                while (snapshot && (*snapshot == '-' || *snapshot == '_'))
+                        snapshot++;
+        }
+
+        if (get_sha1(snapshot, sha1) == 0)
+                return snapshot;
+
+        snapshot = fmt("v%s", snapshot);
+        if (get_sha1(snapshot, sha1) == 0)
+                return snapshot;
+
+        return NULL;
 }
 
-void cgit_print_snapshot(const char *head, const char *hex, const char *prefix,
+void cgit_print_snapshot(const char *head, const char *hex,
                          const char *filename, int snapshots, int dwim)
 {
         const struct cgit_snapshot_format* f;
+        char *prefix = NULL;
 
         f = get_format(filename);
         if (!f) {
                 ctx.page.mimetype = "text/html";
                 cgit_print_http_headers(&ctx);
                 cgit_print_docstart(&ctx);
                 cgit_print_pageheader(&ctx);
                 cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
                 cgit_print_docend();
                 return;
         }
 
-        if (!hex && dwim)
+        if (!hex && dwim) {
                 hex = get_ref_from_filename(ctx.repo->url, filename, f);
+                if (hex != NULL) {
+                        prefix = xstrdup(filename);
+                        prefix[strlen(filename) - strlen(f->suffix)] = '\0';
+                }
+        }
 
         if (!hex)
                 hex = head;
 
+        if (!prefix)
+                prefix = xstrdup(cgit_repobasename(ctx.repo->url));
+
         make_snapshot(f, hex, prefix, filename);
+        free(prefix);
 }
diff --git a/ui-snapshot.h b/ui-snapshot.h
index 3540303..b6ede52 100644
--- a/ui-snapshot.h
+++ b/ui-snapshot.h
@@ -1,8 +1,7 @@
 #ifndef UI_SNAPSHOT_H
 #define UI_SNAPSHOT_H
 
 extern void cgit_print_snapshot(const char *head, const char *hex,
-                                const char *prefix, const char *filename,
-                                int snapshot, int dwim);
+                                const char *filename, int snapshot, int dwim);
 
 #endif /* UI_SNAPSHOT_H */
diff --git a/ui-tree.c b/ui-tree.c
index 4bf372a..9876c99 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -105,13 +105,13 @@ static int ls_item(const unsigned char *sha1, const char *base, int baselen,
                                curr_rev, fullpath);
         }
         htmlf("</td><td class='ls-size'>%li</td>", size);
 
         html("<td>");
         cgit_log_link("log", NULL, "button", ctx.qry.head, curr_rev,
-                      fullpath, 0, NULL, NULL);
+                      fullpath, 0, NULL, NULL, ctx.qry.showmsg);
         html("</td></tr>\n");
         free(name);
         return 0;
 }
 
 static void ls_head()