This makes it possible to use strict commit date ordering even when
the commit graph flag is activated.
---
 cgit.c       |    8 ++++++++
 cgit.h       |    4 ++++
 cgitrc.5.txt |   22 ++++++++++++++++++++++
 cmd.c        |    3 ++-
 shared.c     |    2 ++
 ui-log.c     |   13 ++++++++++++-
 ui-log.h     |    2 +-
 ui-summary.c |    2 +-
 8 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/cgit.c b/cgit.c
index 4ec00f6..f8c9a53 100644
--- a/cgit.c
+++ b/cgit.c
@@ -84,6 +84,10 @@ void repo_config(struct cgit_repo *repo, const char *name, 
const char *value)
                repo->enable_remote_branches = atoi(value);
        else if (!strcmp(name, "enable-subject-links"))
                repo->enable_subject_links = atoi(value);
+       else if (!strcmp(name, "date-order"))
+               repo->date_order = atoi(value);
+       else if (!strcmp(name, "topo-order"))
+               repo->topo_order = atoi(value);
        else if (!strcmp(name, "max-stats"))
                repo->max_stats = cgit_find_stats_period(value, NULL);
        else if (!strcmp(name, "module-link"))
@@ -257,6 +261,10 @@ void config_cb(const char *name, const char *value)
                ctx.cfg.clone_url = xstrdup(value);
        else if (!strcmp(name, "local-time"))
                ctx.cfg.local_time = atoi(value);
+       else if (!strcmp(name, "date-order"))
+               ctx.cfg.date_order = atoi(value);
+       else if (!strcmp(name, "topo-order"))
+               ctx.cfg.topo_order = atoi(value);
        else if (!prefixcmp(name, "mimetype."))
                add_mimetype(name + 9, value);
        else if (!strcmp(name, "include"))
diff --git a/cgit.h b/cgit.h
index 86afad1..a597b42 100644
--- a/cgit.h
+++ b/cgit.h
@@ -84,6 +84,8 @@ struct cgit_repo {
        int enable_remote_branches;
        int enable_subject_links;
        int max_stats;
+       int date_order;
+       int topo_order;
        time_t mtime;
        struct cgit_filter *about_filter;
        struct cgit_filter *commit_filter;
@@ -229,6 +231,8 @@ struct cgit_config {
        int summary_log;
        int summary_tags;
        int ssdiff;
+       int date_order;
+       int topo_order;
        struct string_list mimetypes;
        struct cgit_filter *about_filter;
        struct cgit_filter *commit_filter;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index 3e2d87f..70db7d5 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -92,6 +92,12 @@ css::
        Url which specifies the css document to include in all cgit pages.
        Default value: "/cgit.css".
 
+date-order::
+       Flag which, when set to "1", will make add the "date-order" parameter
+       to all "git log" calls. This enables strict commit date ordering,
+       also for the commit graph, that can be enabled with the
+       "enable-commit-graph" flag. Default value: "0".
+
 embedded::
        Flag which, when set to "1", will make cgit generate a html fragment
        suitable for embedding in other html pages. Default value: none. See
@@ -368,6 +374,11 @@ strict-export::
        repositories to match those exported by git-daemon. This option MUST 
come
        before 'scan-path'.
 
+topo-order::
+       Flag which, when set to "1", will make add the "topo-order" parameter
+       to all "git log" calls. This order the commit in topological order.
+       Default value: "0".
+
 virtual-root::
        Url which, if specified, will be used as root for all cgit links. It
        will also cause cgit to generate 'virtual urls', i.e. urls like
@@ -390,6 +401,12 @@ repo.commit-filter::
        Override the default commit-filter. Default value: none. See also:
        "enable-filter-overrides". See also: "FILTER API".
 
+repo.date-order::
+       Flag which, when set to "1", will make add the "date-order" parameter
+       to all "git log" calls. This enables strict commit date ordering,
+       also for the commit graph, that can be enabled with the
+       "enable-commit-graph" flag. Default value: "0".
+
 repo.defbranch::
        The name of the default branch for this repository. If no such branch
        exists in the repository, the first branch name (when sorted) is used
@@ -474,6 +491,11 @@ repo.source-filter::
        Override the default source-filter. Default value: none. See also:
        "enable-filter-overrides". See also: "FILTER API".
 
+repo.topo-order::
+       Flag which, when set to "1", will make add the "topo-order" parameter
+       to all "git log" calls. This order the commit in topological order.
+       Default value: "0".
+
 repo.url::
        The relative url used to access the repository. This must be the first
        setting specified for each repo. Default value: none.
diff --git a/cmd.c b/cmd.c
index 5a3d157..04d25ed 100644
--- a/cmd.c
+++ b/cmd.c
@@ -68,7 +68,8 @@ static void log_fn(struct cgit_context *ctx)
 {
        cgit_print_log(ctx->qry.sha1, ctx->qry.ofs, ctx->cfg.max_commit_count,
                       ctx->qry.grep, ctx->qry.search, ctx->qry.path, 1,
-                      ctx->repo->enable_commit_graph);
+                      ctx->repo->enable_commit_graph,
+                      ctx->repo->date_order, ctx->repo->topo_order);
 }
 
 static void ls_cache_fn(struct cgit_context *ctx)
diff --git a/shared.c b/shared.c
index 0a0e22e..4e8a9e7 100644
--- a/shared.c
+++ b/shared.c
@@ -62,6 +62,8 @@ struct cgit_repo *cgit_add_repo(const char *url)
        ret->enable_remote_branches = ctx.cfg.enable_remote_branches;
        ret->enable_subject_links = ctx.cfg.enable_subject_links;
        ret->max_stats = ctx.cfg.max_stats;
+       ret->date_order = ctx.cfg.date_order;
+       ret->topo_order = ctx.cfg.topo_order;
        ret->module_link = ctx.cfg.module_link;
        ret->readme = ctx.cfg.readme;
        ret->mtime = -1;
diff --git a/ui-log.c b/ui-log.c
index 6b12ca2..4c1a10c 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -278,7 +278,8 @@ static char *next_token(char **src)
 }
 
 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char 
*pattern,
-                   char *path, int pager, int commit_graph)
+                   char *path, int pager, int commit_graph,
+                   int date_order, int topo_order)
 {
        struct rev_info rev;
        struct commit *commit;
@@ -327,6 +328,16 @@ void cgit_print_log(const char *tip, int ofs, int cnt, 
char *grep, char *pattern
                                        COLUMN_COLORS_HTML_MAX);
        }
 
+       if (date_order) {
+               static const char *date_order_arg = "--date-order";
+               vector_push(&vec, &date_order_arg, 0);
+       }
+
+       if (topo_order) {
+               static const char *topo_order_arg = "--topo-order";
+               vector_push(&vec, &topo_order_arg, 0);
+       }
+
        if (path) {
                arg = "--";
                vector_push(&vec, &arg, 0);
diff --git a/ui-log.h b/ui-log.h
index d0cb779..68fff08 100644
--- a/ui-log.h
+++ b/ui-log.h
@@ -3,7 +3,7 @@
 
 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep,
                           char *pattern, char *path, int pager,
-                          int commit_graph);
+                          int commit_graph, int date_order, int topo_order);
 extern void show_commit_decorations(struct commit *commit);
 
 #endif /* UI_LOG_H */
diff --git a/ui-summary.c b/ui-summary.c
index 227ed27..f08e59e 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -59,7 +59,7 @@ void cgit_print_summary()
        if (ctx.cfg.summary_log > 0) {
                html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
                cgit_print_log(ctx.qry.head, 0, ctx.cfg.summary_log, NULL,
-                              NULL, NULL, 0, 0);
+                              NULL, NULL, 0, 0, 0, 0);
        }
        if (ctx.repo->clone_url)
                print_urls(expand_macros(ctx.repo->clone_url), NULL);
-- 
1.7.10


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