Fix preprocessor use and config file precedence in piesctl

* NEWS: Document changes.
* doc/pies.texi: Document changes.
* src/cmdline.opt: Don't set preprocessor if DEFAULT_PREPROCESSOR
is NULL.
* src/piesctl-cl.opt: New options: --preprocessor,
--no-preprocessor.
* src/piesctl.c (parse_config): If either client.url or
default_url is set in the program-specific config, use it
and don't parse pies.conf.  This is consistent with the
documented behavior.
(main): Initialize grecs_preprocessor.

3 files changed, 18 insertions, 2 deletions

diff --git a/src/cmdline.opt b/src/cmdline.opt
index 95ede4c..83c8819 100644
--- a/src/cmdline.opt
+++ b/src/cmdline.opt
@@ -132,7 +132,8 @@ GROUP(Preprocessor)
 OPTION(preprocessor,,COMMAND,
        [<use COMMAND instead of the default preprocessor>])
 BEGIN
-    grecs_preprocessor = optarg;
+    if (DEFAULT_PREPROCESSOR)
+        grecs_preprocessor = optarg;
 END
 
 OPTION(no-preprocessor,,,
diff --git a/src/piesctl-cl.opt b/src/piesctl-cl.opt
index ea71d59..8a72703 100644
--- a/src/piesctl-cl.opt
+++ b/src/piesctl-cl.opt
@@ -77,6 +77,19 @@ END
 
 GROUP(Preprocessor)
 
+OPTION(preprocessor,,COMMAND,
+       [<use COMMAND instead of the default preprocessor>])
+BEGIN
+    if (DEFAULT_PREPROCESSOR)
+        grecs_preprocessor = optarg;
+END
+
+OPTION(no-preprocessor,,,
+       [<disable preprocessing>])
+BEGIN
+    grecs_preprocessor = NULL;
+END
+
 OPTION(include-directory,I,DIR,
        [<add include directory>])
 BEGIN
@@ -95,6 +108,7 @@ BEGIN
   pp_add_option ("-U", optarg);
 END
 
+
 OPTIONS_END
 
 void
diff --git a/src/piesctl.c b/src/piesctl.c
index 44b3d0f..d88c441 100644
--- a/src/piesctl.c
+++ b/src/piesctl.c
@@ -168,7 +168,7 @@ parse_config (void)
                 program_name, file_name);
     }
 
-  if (!client.url)
+  if (!client.url && !default_url)
     {
       /* Try local instance configuration */
       file_name = mkfilename (SYSCONFDIR, instance, ".conf");
@@ -2322,6 +2322,7 @@ main (int argc, char **argv)
   textdomain (PACKAGE);
 #endif
   grecs_print_diag_fun = piesctl_diag;
+  grecs_preprocessor = DEFAULT_PREPROCESSOR;
 
   proginfo.print_help_hook = command_help;
   parse_options (argc, argv, &i);