[Issue 9640] New: Add #line overload to restore natural line numbering / module name

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9640

           Summary: Add #line overload to restore natural line numbering /
                    module name
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: minor
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: m.strashun at gmail.com


--- Comment #0 from Dicebot <m.strashun at gmail.com> 2013-03-03 05:46:16 PST ---
#line is a pretty convenient tool to get better errors from string mixin's.
Typical code that uses it looks like this:
---
100 #line 1 "mixin name"
101 mixin(generateSomeBigCode());
102 #line 102 "module name"

---
It works, but every time some new code is added above, line numbering will
break again and there is no way to verify this from compiler. I suggest to add
parameter-less #line that will restore natural line order and module name. 

Something like this:
---
100 #line 1 "mixin name"
101 mixin(generateSomeBigCode());
102 #line
---

That will help quite a lot in generic code maintenance.

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