Add +pc {latin1|unicode} switch and io:printable_range/0

This is the base for implementing configurable
~tp printouts, so that the user can define which
characters to view as actually printable in the shell and
by io_lib:format.

The functionality is neither documented nor used in this commit

1 files changed, 17 insertions, 0 deletions

diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index 577554c43d..02615f9ef1 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -145,6 +145,13 @@ static char *plusr_val_switches[] = {
     NULL
 };
 
+/* +pc arguments with values */
+static char *pluspc_val_switches[] = {
+    "latin1",
+    "unicode",
+    NULL
+};
+
 /* +z arguments with values */
 static char *plusz_val_switches[] = {
     "dbbl",
@@ -912,6 +919,16 @@ int main(int argc, char **argv)
 			  i++;
 		      }
 		      break;
+		  case 'p':
+		      if (argv[i][2] != 'c' || argv[i][3] != '\0')
+			  goto the_default;
+		      if (i+1 >= argc)
+			  usage(argv[i]);
+		      argv[i][0] = '-';
+		      add_Eargs(argv[i]);
+		      add_Eargs(argv[i+1]);
+		      i++;
+		      break;
 		  case 'z':
 		      if (!is_one_of_strings(&argv[i][2], plusz_val_switches)) {
 			  goto the_default;