Missing line termination/length on lrstar_lexer::print_line

[mingodad]

When testing grammars/ANTLR we get incorrect output from lrstar_lexer::print_line due to missing line termination/length see bello a possible fix for it: Possible fix:

-------------------------- src/include/lrstar_lexer.h --------------------------
index f02d187..57d3802 100644
@@ -96,8 +96,10 @@ public:
             linenumb_printed = linenumb;

             if (*ls != 26) {    // Not end of file?
-               printf("%6d  %s\n", linenumb, ls);
-               fprintf(stderr, "%6d  %s\n", linenumb, ls);
+               char *eol = ls;
+               while(*eol && *eol != '\n' &&  *eol != 26 ) ++eol;
+               printf("%6d  %.*s\n", linenumb, eol - ls, ls);
+               fprintf(stderr, "%6d  %.*s\n", linenumb, eol - ls, ls);
             }
          }
       }

Using the https://github.com/thutt/lrstar/blob/24.0.018/grammars/ANTLR/test.input.txt :

./antlr --output /dev/null test.input.txt
==26303== 

Input File ...

ANTLR parser.

     1  /*
 * [The "BSD license"]
 *  Copyright (c) 2013 Terence Parr
 *  Copyright (c) 2013 Sam Harwell
 *  All rights reserved.
...

With the fix:

./antlr --output /dev/null test.input.txt
==26804== 

Input File ...

     1  /*
     2   * [The "BSD license"]
     3   *  Copyright (c) 2013 Terence Parr
     4   *  Copyright (c) 2013 Sam Harwell
     5   *  All rights reserved.
...

But still there is something else going on because after line 118 it start repeating again once more:

   114     :  AT (actionScopeName COLONCOLON)? identifier actionBlock
   115     ;
   116  
   117     // Scope names could collide with keywords; allow them as ids for action scopes
   118  actionScopeName
ANTLR parser.

     1  /*
     2   * [The "BSD license"]
     3   *  Copyright (c) 2013 Terence Parr
     4   *  Copyright (c) 2013 Sam Harwell
     5   *  All rights reserved.

[mingodad]

The problem of start repeating again is due to output to both stdout and stderr but probably we only want stderr see the complete possible fix bellow:

-------------------------- src/include/lrstar_lexer.h --------------------------
index f02d187..8e42cc5 100644
@@ -88,7 +88,6 @@ public:
          char *ls;
          if (linenumb > linenumb_printed) {
             if (linenumb == 1) {
-               printf  (        "\n");
                fprintf (stderr, "\nInput File ...\n\n");
             }

@@ -96,8 +95,9 @@ public:
             linenumb_printed = linenumb;

             if (*ls != 26) {    // Not end of file?
-               printf("%6d  %s\n", linenumb, ls);
-               fprintf(stderr, "%6d  %s\n", linenumb, ls);
+               char *eol = ls;
+               while(*eol && *eol != '\n' &&  *eol != 26 ) ++eol;
+               fprintf(stderr, "%6d  %.*s\n", linenumb, eol - ls, ls);
             }
          }
       }