diff -u -r ../vim-8.0.1750/src/option.c ./src/option.c
--- ../vim-8.0.1750/src/option.c	2018-04-23 21:29:48.000000000 +0200
+++ ./src/option.c	2018-04-26 22:18:46.227593576 +0200
@@ -3413,7 +3413,7 @@
 #  ifdef MACOS_X
 		p = (char_u *)"/private/tmp";
 #  else
-		p = (char_u *)"/tmp";
+		p = (char_u *)"@TERMUX_PREFIX@/tmp";
 #  endif
 	    else
 # endif