Bugs found in rrtext output.
perlawk opened this issue · comments
Hi:
A bug is found:
when using rrtext with the following example:
p = [a] , [b] ;
kgt -l ebnf -e rrtext < bug.ebnf >bug.txt
There are trailing spaces at the end of output:
p:
>-------v >-------v <- trailing spaces
| | | | <- trailing spaces
||--^-- a -->--^-- b -->--||
if the production rule output is shorter than the console width, it's not
obvious, with a long production rule, like:
block = [const-declaration] ,
[var-declaration] ,
[proc-declaration] ,
compund-statement
;
break of lines occurred.
So, some fix required. I made a simple patch for temporary fix.
Just right trim the output string:
#include <ctype.h>
char *rtrim(char *s) {
int n = strlen(s);
while(--n>=0 && ( iscntrl(s[n]) || isspace(s[n]) || isblank(s[n])))
;
s[++n] = 0;
return s;
}
or a patch file attached for the src/rrtext/output.c
Thanks.
