sequencer: left-trim lines read from the script

diff --git a/pager.c b/pager.c
index 4811f3f0a19366773bb82ee7a12d31cce694a7e1..ae79643363091f4967097bdff6e009ea4c7df5e0 100644 (file)
--- a/pager.c
+++ b/pager.c
@@ -43,6 +43,37 @@ static int core_pager_config(const char *var, const char *value, void *data)
        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;
@@ -53,7 +84,7 @@ const char *git_pager(int stdout_is_tty)
        pager = getenv("GIT_PAGER");
        if (!pager) {
                if (!pager_program)
-                       git_config(core_pager_config, NULL);
+                       read_early_config(core_pager_config, NULL);
                pager = pager_program;
        }
        if (!pager)
@@ -66,14 +97,38 @@ const char *git_pager(int stdout_is_tty)
        return pager;
 }
 
+static void setup_pager_env(struct argv_array *env)
+{
+       const char **argv;
+       int i;
+       char *pager_env = xstrdup(PAGER_ENV);
+       int n = split_cmdline(pager_env, &argv);
+
+       if (n < 0)
+               die("malformed build-time PAGER_ENV: %s",
+                       split_cmdline_strerror(n));
+
+       for (i = 0; i < n; i++) {
+               char *cp = strchr(argv[i], '=');
+
+               if (!cp)
+                       die("malformed build-time PAGER_ENV");
+
+               *cp = '\0';
+               if (!getenv(argv[i])) {
+                       *cp = '=';
+                       argv_array_push(env, argv[i]);
+               }
+       }
+       free(pager_env);
+       free(argv);
+}
+
 void prepare_pager_args(struct child_process *pager_process, const char *pager)
 {
        argv_array_push(&pager_process->args, pager);
        pager_process->use_shell = 1;
-       if (!getenv("LESS"))
-               argv_array_push(&pager_process->env_array, "LESS=FRX");
-       if (!getenv("LV"))
-               argv_array_push(&pager_process->env_array, "LV=-c");
+       setup_pager_env(&pager_process->env_array);
 }
 
 void setup_pager(void)
@@ -192,7 +247,7 @@ int check_pager_config(const char *cmd)
        data.want = -1;
        data.value = NULL;
 
-       git_config(pager_command_config, &data);
+       read_early_config(pager_command_config, &data);
 
        if (data.value)
                pager_program = data.value;