mosh: Assume terminal supports 256 colors

Assuming that the terminal running mosh in Termux supports 256
colors should be safe, and avoids a popen() call which uses
/system/bin/sh and may not always work.

packages/mosh/build.sh

@@ -1,7 +1,7 @@
 TERMUX_PKG_HOMEPAGE=http://mosh.mit.edu/
 TERMUX_PKG_DESCRIPTION="Mobile shell that supports roaming and intelligent local echo"
 TERMUX_PKG_VERSION=1.2.5.20160523
-TERMUX_PKG_BUILD_REVISION=1
+TERMUX_PKG_BUILD_REVISION=2
 TERMUX_PKG_SRCURL=http://mosh.mit.edu/mosh-${TERMUX_PKG_VERSION}.tar.gz
 _COMMIT=05fe24d50ddbabf1c87be748b7397907ae1b9654
 TERMUX_PKG_SRCURL=https://github.com/mobile-shell/mosh/archive/${_COMMIT}.zip

packages/mosh/mosh.cc

@@ -339,25 +339,9 @@ int main( int argc, char *argv[] )
   char **command = &argv[optind];
   int commands = argc - optind;
 
-  string color_invocation = client + " -c";
-  FILE *color_file = popen( color_invocation.c_str(), "r" );
-  if ( !color_file ) die( "%s: popen: %d", argv[0], errno );
   char *buf = NULL;
   size_t buf_sz = 0;
   ssize_t n;
-  if ( ( n = getline( &buf, &buf_sz, color_file ) ) < 0 ) {
-    die( "%s: Can't count colors: %d", argv[0], errno );
-  }
-  // Chomp the trailing newline:
-  if ( n > 0 && buf[n - 1] == '\n' ) n--;
-  string colors = string( buf, n );
-  pclose( color_file );
-
-  if ( !colors.size() ||
-       colors.find_first_not_of( "0123456789" ) != string::npos ||
-       atoi( colors.c_str() ) < 0 ) {
-    colors = "0";
-  }
 
   int pty, pty_slave;
   struct winsize ws;
@@ -383,7 +367,7 @@ int main( int argc, char *argv[] )
     server_args.push_back( "new" );
     server_args.push_back( "-s" );
     server_args.push_back( "-c" );
-    server_args.push_back( colors );
+    server_args.push_back( "256" );
     if ( port_request.size() ) {
       server_args.push_back( "-p" );
       server_args.push_back( port_request );