[vte/vte-next] pty: Set env var with vte version

[Christian Persch <chpe src gnome org>]

commit c1e189d92dd3ed653c28bf17a2b154f8e506e308
Author: Christian Persch <chpe gnome org>
Date:   Sun Apr 21 19:02:26 2013 +0200

    pty: Set env var with vte version
    
    This is necessary so that we'll be able to check whether to use the
    vte.sh script in PS1.
    (cherry picked from commit 8bea17d1a36abb635e751e4daf4315b0bf20b26e)

 src/pty.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/pty.c b/src/pty.c
index 83c6dc0..ac87af5 100644
--- a/src/pty.c
+++ b/src/pty.c
@@ -31,6 +31,7 @@
 #include "vtepty.h"
 #include "vtepty-private.h"
 #include "vte.h"
+#include "vteversion.h"
 
 #include <sys/types.h>
 #include <sys/ioctl.h>
@@ -88,6 +89,8 @@ static int _vte_pty_helper_tunnel = -1;
 #undef HAVE_UNIX98_PTY
 #endif
 
+#define VTE_VERSION_NUMERIC ((VTE_MAJOR_VERSION) * 10000 + (VTE_MINOR_VERSION) * 100 + (VTE_MICRO_VERSION))
+
 /* Reset the handlers for all known signals to their defaults.  The parent
  * (or one of the libraries it links to) may have changed one to be ignored. */
 static void
@@ -245,6 +248,7 @@ vte_pty_child_setup (VtePty *pty)
        VtePtyChildSetupData *data = &priv->child_setup_data;
        int fd = -1;
        const char *tty = NULL;
+        char version[7];
 
         if (priv->foreign) {
                 fd = priv->pty_fd;
@@ -347,6 +351,9 @@ vte_pty_child_setup (VtePty *pty)
                 g_setenv("TERM", priv->term, TRUE);
         }
 
+        g_snprintf (version, sizeof (version), "%u", VTE_VERSION_NUMERIC);
+        g_setenv ("VTE", version, TRUE);
+
        /* Finally call an extra child setup */
        if (data->extra_child_setup) {
                data->extra_child_setup (data->extra_child_setup_data);
@@ -400,6 +407,8 @@ __vte_pty_merge_environ (char **envp, const char *term_value)
         if (term_value != NULL)
                 g_hash_table_replace (table, g_strdup ("TERM"), g_strdup (term_value));
 
+        g_hash_table_replace (table, g_strdup ("VTE"), g_strdup_printf ("%u", VTE_VERSION_NUMERIC));
+
        array = g_ptr_array_sized_new (g_hash_table_size (table) + 1);
         g_hash_table_iter_init(&iter, table);
         while (g_hash_table_iter_next(&iter, (gpointer) &name, (gpointer) &value)) {