* 'i': check for "line" describing an integer in all its chars before end or \n
* (i.e. all other chars must be digits, except the first char, which may
* be '+' or '-'; a '+' or '-' without digits following is invalid)
- */
+ * '8': check for "line" describing an integer smaller than or equal UINT8_MAX
+*/
extern void err_try_fgets(char * line, uint32_t linemax, FILE * file,
char * context, char * test);