Add support for .WARNINGS special variable

Create a new special variable, .WARNINGS, to allow per-makefile
control over warnings.  The command line settings will override
this.

Move the handling of warning flags to a new file: src/warning.c.
Allow the decode to work with generic strings, and call it from
decode_switches().

* Makefile.am: Add new file src/warning.c.
* build_w32.bat: Ditto.
* builddos.bat: Ditto.
* po/POTFILES.in: Ditto.
* src/makeint.h: #define for the .WARNINGS variable name.
* src/warning.h: Add declarations for methods moved from main.c.
Rename the enum warning_state to warning_action.
* src/warning.c: New file.  Move all warning encode/decode here
from main.c.
* src/main.c: Move methods into warning.c and call those methods
instead.
(main): Set .WARNINGS as a special variable.
* src/job.c (construct_command_argv): Rename to warning_action.
* src/read.c (tilde_expand): Ditto.
* src/variable.c (set_special_var): Update warnings when the
.WARNINGS special variable is set.
* tests/scripts/options/warn: Check invalid warning options.
* tests/scripts/variables/WARNINGS: Add tests for the .WARNINGS
special variable.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/read.c b/src/read.c
index 1694ec7d..878a5620 100644
--- a/src/read.c
+++ b/src/read.c
@@ -3068,7 +3068,7 @@ tilde_expand (const char *name)
 
       {
         /* Turn off undefined variables warning while we expand HOME.  */
-        enum warning_state save = warn_get (wt_undefined_var);
+        enum warning_action save = warn_get (wt_undefined_var);
         warn_set (wt_undefined_var, w_ignore);
 
         home_dir = allocated_expand_variable (STRING_SIZE_TUPLE ("HOME"));