fix a lockup

The parse would lockup in REPL mode on comment to end of line.

See #111

Thanks MvGulik

Author: jcupitt

ChangeLog

@@ -1,3 +1,6 @@
+started 8.9.2 22/11/23
+- fix a lockup with comment characters in REPL [MvGulik]
+
 started 8.9.1 15/2/23
 - fix build with --std=c99 [Schamschula]
 

configure.ac

@@ -1,6 +1,6 @@
 # Process this file with autoconf to produce a configure script.
 
-AC_INIT([nip2], [8.9.1], [[email protected]])
+AC_INIT([nip2], [8.9.2], [[email protected]])
 
 # foreign stops complaints about a missing README (we use README.md instead)
 # and missing INSTALL (the standard Gnu INSTALL is not very useful)
@@ -17,7 +17,7 @@ dnl
 
 m4_define([nip_major_version], [8])
 m4_define([nip_minor_version], [9])
-m4_define([nip_micro_version], [1])
+m4_define([nip_micro_version], [2])
 m4_define([nip_version],
           [nip_major_version.nip_minor_version.nip_micro_version])
 

src/lex.l

@@ -180,7 +180,7 @@ read_char( void )
 
 	/* Read string up to \n, EOF.
 	 */
-	while( (ch = input()) != EOF && ch != '\n' )
+	while( (ch = input()) != EOF && ch != '\n' && ch != '\0')
 		;
 }