added magic comments to warp sources to set up indentation in Emacs

Test Plan:
  fbconfig -r warp && fbmake dev && fbmake runtests_dev
  # open some of the files in Emacs and see that it now automatically indents 4 spaces instead of 2

Reviewers: aalexandre, njormrod

Reviewed By: aalexandre

Subscribers: sdwilsh

Differential Revision: https://phabricator.fb.com/D1646276

Signature: t1:1646276:1420752359:192a01d4c2cd6141f98fa37401496cce6b130f18

charclass.d

@@ -131,3 +131,10 @@ ubyte isMultiTok(uchar c) pure nothrow
 {
     return cclassTable[c] & CClass.multiTok;
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

cmdline.d

@@ -196,3 +196,10 @@ unittest
     assert(sysIndex == 4);
     assert(paths == [".","a","b","d","e","c","f"]);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

constexpr.d

@@ -762,3 +762,10 @@ unittest
 
 
 
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

context.d

@@ -938,3 +938,10 @@ unittest
                    "# 1 \"test.c\"\n# 1 \"test.c\"\n+def=3=* +\n");
 //    exit(0);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

directive.d

@@ -1024,3 +1024,10 @@ void includeFile(R)(R ctx, IncludeType includeType, bool sysstring,
     writeStatus(sf.cachedRead ? 'C' : ' ');
     ctx.pushFile(sf, system, pathIndex, includeTrace);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

expanded.d

@@ -156,3 +156,10 @@ struct Expanded(R)
         lineBuffer.put(0);
     }
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

file.d

@@ -215,3 +215,10 @@ void myReadFree(void[] buf)
 {
     free(buf.ptr - SPAD);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

id.d

@@ -202,3 +202,10 @@ struct Id
         return hash;
     }
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

lexer.d

@@ -1113,3 +1113,10 @@ unittest
     assert(lexer.front == TOK.eof);
   }
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

loc.d

@@ -74,3 +74,10 @@ struct LocList
     Loc first;
     LocList* rest;
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

macros.d

@@ -1678,3 +1678,10 @@ void textPrint(const(uchar)[] s)
     }
     writeln(']');
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

main.d

@@ -121,3 +121,10 @@ void err_warning(T...)(Loc loc, T args)
     stderr.write("warning: ");
     stderr.writefln(args);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

number.d

@@ -486,3 +486,10 @@ unittest
     s = s.skipFloat(bitbucket, false, false, true);
     assert(s.empty);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

outdeps.d

@@ -92,3 +92,10 @@ void dependencyFileWrite(string filename, string[] deps)
     auto w = f.lockingTextWriter();
     dependencyFileFormat(w, deps);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

ranges.d

@@ -95,3 +95,10 @@ unittest
     ++i;
     assert(buf[0 .. i] == "ab");
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

skip.d

@@ -576,3 +576,10 @@ unittest
     r2 = s2.skipBlankLine();
     assert(r2.empty);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

sources.d

@@ -207,3 +207,10 @@ void myBuildPath(R)(ref R buf, const(char)[] seg1, const(char)[] seg2)
         buf.put(c);
     }
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

stringlit.d

@@ -334,3 +334,10 @@ unittest
     assert(r.empty && n == 0x6162);
   }
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

textbuf.d

@@ -175,3 +175,10 @@ unittest
     assert(textbuf.length == 0);
     textbuf.free();
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */

warpdrive.d

@@ -180,3 +180,10 @@ int main(string[] args) {
 
   return execvp(options[0], options);
 }
+
+/*
+ * Local Variables:
+ * mode: d
+ * c-basic-offset: 4
+ * End:
+ */