Merge branch 'ld/p4-compare-dir-vs-symlink' into maint

[git-core/git.git] / pager.c

diff --git a/pager.c b/pager.c
index 6470b81..ae79643 100644 (file)
--- a/pager.c
+++ b/pager.c
@@ -6,12 +6,8 @@
 #define DEFAULT_PAGER "less"
 #endif
 
-/*
- * This is split up from the rest of git so that we can do
- * something different on Windows.
- */
-
 static struct child_process pager_process = CHILD_PROCESS_INIT;
+static const char *pager_program;
 
 static void wait_for_pager(int in_signal)
 {
@@ -40,6 +36,44 @@ static void wait_for_pager_signal(int signo)
        raise(signo);
 }
 
+static int core_pager_config(const char *var, const char *value, void *data)
+{
+       if (!strcmp(var, "core.pager"))
+               return git_config_string(&pager_program, var, value);
+       return 0;
+}
+
+static void read_early_config(config_fn_t cb, void *data)
+{
+       git_config_with_options(cb, data, NULL, 1);
+
+       /*
+        * Note that this is a really dirty hack that does the wrong thing in
+        * many cases. The crux of the problem is that we cannot run
+        * setup_git_directory() early on in git's setup, so we have no idea if
+        * we are in a repository or not, and therefore are not sure whether
+        * and how to read repository-local config.
+        *
+        * So if we _aren't_ in a repository (or we are but we would reject its
+        * core.repositoryformatversion), we'll read whatever is in .git/config
+        * blindly. Similarly, if we _are_ in a repository, but not at the
+        * root, we'll fail to find .git/config (because it's really
+        * ../.git/config, etc). See t7006 for a complete set of failures.
+        *
+        * However, we have historically provided this hack because it does
+        * work some of the time (namely when you are at the top-level of a
+        * valid repository), and would rarely make things worse (i.e., you do
+        * not generally have a .git/config file sitting around).
+        */
+       if (!startup_info->have_repository) {
+               struct git_config_source repo_config;
+
+               memset(&repo_config, 0, sizeof(repo_config));
+               repo_config.file = ".git/config";
+               git_config_with_options(cb, data, &repo_config, 1);
+       }
+}
+
 const char *git_pager(int stdout_is_tty)
 {
        const char *pager;
@@ -50,7 +84,7 @@ const char *git_pager(int stdout_is_tty)
        pager = getenv("GIT_PAGER");
        if (!pager) {
                if (!pager_program)
-                       git_config(git_default_config, NULL);
+                       read_early_config(core_pager_config, NULL);
                pager = pager_program;
        }
        if (!pager)
@@ -180,23 +214,42 @@ int decimal_width(uintmax_t number)
        return width;
 }
 
-/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
-int check_pager_config(const char *cmd)
+struct pager_command_config_data {
+       const char *cmd;
+       int want;
+       char *value;
+};
+
+static int pager_command_config(const char *var, const char *value, void *vdata)
 {
-       int want = -1;
-       struct strbuf key = STRBUF_INIT;
-       const char *value = NULL;
-       strbuf_addf(&key, "pager.%s", cmd);
-       if (git_config_key_is_valid(key.buf) &&
-           !git_config_get_value(key.buf, &value)) {
-               int b = git_config_maybe_bool(key.buf, value);
+       struct pager_command_config_data *data = vdata;
+       const char *cmd;
+
+       if (skip_prefix(var, "pager.", &cmd) && !strcmp(cmd, data->cmd)) {
+               int b = git_config_maybe_bool(var, value);
                if (b >= 0)
-                       want = b;
+                       data->want = b;
                else {
-                       want = 1;
-                       pager_program = xstrdup(value);
+                       data->want = 1;
+                       data->value = xstrdup(value);
                }
        }
-       strbuf_release(&key);
-       return want;
+
+       return 0;
+}
+
+/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
+int check_pager_config(const char *cmd)
+{
+       struct pager_command_config_data data;
+
+       data.cmd = cmd;
+       data.want = -1;
+       data.value = NULL;
+
+       read_early_config(pager_command_config, &data);
+
+       if (data.value)
+               pager_program = data.value;
+       return data.want;
 }