Parsing issues do not report the parsed file

[nsensfel]

Issues in parsing raised by ANTLR indicate messages looking like the following:

line 19:3 extraneous input '(variable' expecting {WS, AT_KW, PARAMETER_KW}
line 19:13 extraneous input 'oscar' expecting {WS, AT_KW, PARAMETER_KW}
<Java stack trace>

At no point is the file containing these lines indicated, making it difficult to locate the issue.

[nsensfel]

This should now be working properly.

[nsensfel]

It has improved, but there are still cases where the location of the issue isn't pointed out in any other detail than the file in which it occurred. This isn't enough.

[nsensfel]

Example of case where the reported error doesn't help enough: writing (cond 42).

[nsensfel]

Still an issue in 050e329. When the parser invalidates the input or when there is a Java error, it is still rather hard to figure out exactly what part of the narrative is causing the issue.