diff -uNr a/ffa/MANIFEST.TXT b/ffa/MANIFEST.TXT
--- a/ffa/MANIFEST.TXT d35009b556cea183da0e80922a0a46907d16fb2486d4430808c6259a272c3402a298d41b00fc9a4157b4102e3480c13dfc8ee93ecf7e0cbe7644b6c5abf309e0
+++ b/ffa/MANIFEST.TXT 645d708e11af079594157a4d878c02d39e63cbffb3d9f411094f4db084b6ad79da728e185faa57765dd7a1d3b236785fe3c4d5d34242a2d012475578c166157d
@@ -21,3 +21,4 @@
  611618 ffa_ch20_litmus                "A Peh-powered verifier for traditional GPG signatures."
  611775 ffa_ch20b_litmus_legacy_hashes "Support for certain ancient hash algos in Litmus."
  612395 ffa_ch20c_litmus_clearsigned   "Support for 'clearsigned' GPG texts in Litmus."
+ 612828 ffa_ch20d_litmus_nested_fix    "Fix for bug where nested 'clearsigned' sigs were rejected."
diff -uNr a/ffa/contrib/litmus/litmus.sh b/ffa/contrib/litmus/litmus.sh
--- a/ffa/contrib/litmus/litmus.sh 11847537cdcdd430c43ab5e0d9ad598e7f7bfca1dedc7381128ede03c6515c2685ccab90672879eda73e6fe29b711eee3965421c4ad0866d7ae26df72a2ed197
+++ b/ffa/contrib/litmus/litmus.sh a6f142145b954fc7938df34435542376d3d7d2609aec6b7367ad49414e3730960ec4e213b6aa0ede2c8a4714f44224970738c8da938b6c1ae426188491f22c06
@@ -225,8 +225,8 @@
 done
 
 # 'ASCII-Armoured' PGP signatures have mandatory start and end markers:
-START_MARKER="\-\-\-\-\-BEGIN PGP SIGNATURE\-\-\-\-\-"
-END_MARKER="\-\-\-\-\-END PGP SIGNATURE\-\-\-\-\-"
+START_MARKER="^\-\-\-\-\-BEGIN PGP SIGNATURE\-\-\-\-\-"
+END_MARKER="^\-\-\-\-\-END PGP SIGNATURE\-\-\-\-\-"
 
 # Determine start and end line positions for payload:
 start_ln=$(grep -m 1 -n "$START_MARKER" $SIGFILE | cut -d ':' -f1)
@@ -274,7 +274,7 @@
 if [ $CLEARSIGN_MODE == true ]
 then
     # Find position of 'clearsign' payload start marker:
-    CLEAR_MARKER="\-\-\-\-\-BEGIN PGP SIGNED MESSAGE\-\-\-\-\-"
+    CLEAR_MARKER="^\-\-\-\-\-BEGIN PGP SIGNED MESSAGE\-\-\-\-\-"
     start_clr=$(grep -m 1 -n "$CLEAR_MARKER" $SIGFILE | cut -d ':' -f1)
     
     # If payload start marker was not found: