Replace 'nonsyllabic' with 'nsy'.

phsource/ph_croatian

 
 
 phoneme r*
-  vwl nonsyllabic
+  vwl nsy
   unstressed
   ipa  NULL
   length 50

phsource/ph_danish

 
 phoneme @-   //  very short schwa
   vwl starttype #@  endtype #@
-  unstressed nonsyllabic
+  unstressed nsy
   ipa ə
   IF nextPhW(*) OR nextPhW(r) THEN
     ipa NULL   // @-* is used to make 'r'

phsource/ph_russian

 
 phoneme I^      	// "silent i", palatilizes the preceding consonant
   vwl starttype #i endtype #i
-  unstressed nonsyllabic
+  unstressed nsy
   length 70
   IF nextPh(isVowel) THEN
 	ChangePhoneme(;)

phsource/phonemes

 
 phoneme @-   //  very short schwa
   vwl starttype #@  endtype #@
-  unstressed nonsyllabic
+  unstressed nsy
 
   ipa ə
   IF nextPhW(*) OR nextPhW(r) THEN

src/libespeak-ng/compiledata.c

 	{ "nolink",       tPHONEME_FLAG, phNOLINK },
 	{ "brkafter",     tPHONEME_FLAG, phBRKAFTER },
 	{ "rhotic",       tPHONEME_FLAG, phRHOTIC },
-	{ "nonsyllabic",  tPHONEME_FLAG, phNONSYLLABIC }, // TODO (deprecated): use 'nsy' instead
 	{ "lengthenstop", tPHONEME_FLAG, phLENGTHENSTOP },
 	{ "nopause",      tPHONEME_FLAG, phNOPAUSE },
 	{ "prevoice",     tPHONEME_FLAG, phPREVOICE },