change external-compression warning text

1 files changed, 9 insertions, 3 deletions

diff --git a/xdelta3/xdelta3-main.h b/xdelta3/xdelta3-main.h
index 64f90da..d2aa4e5 100644
--- a/xdelta3/xdelta3-main.h
+++ b/xdelta3/xdelta3-main.h
@@ -2500,15 +2500,21 @@ main_secondary_decompress_check (main_file  *file,
           if (file->flags & RD_MAININPUT)
             {
               XPR(NT
-  "WARNING: the encoder is automatically decompressing the primary input\n");
+  "WARNING: the encoder is automatically decompressing the input file;\n");
               XPR(NT 
-  "WARNING: the decoder will automatically re-compress the primary output\n");
+  "WARNING: the decoder will automatically recompress the output file;\n");
               XPR(NT 
   "WARNING: this may result in different compressed data and checksums\n");
               XPR(NT 
   "WARNING: despite being identical data; if this is an issue, use -D\n");
               XPR(NT 
-  "WARNING: to avoid decompression and/or manually decompress the inputs\n");
+  "WARNING: to avoid decompression and/or use -R to avoid recompression\n");
+              XPR(NT 
+  "WARNING: and/or manually decompress the input file; if you know the\n");
+              XPR(NT 
+  "WARNING: compression settings that will produce identical output\n");
+              XPR(NT
+  "WARNING: you may set those flags using the environment (e.g., GZIP=-9)\n");
             }
         }