long printf() argument lists' parameters are better pre- than postfixed with ',' (idea)

As always, it all depends on whether you use a decent text editor. With the magic of "insert mode", even complex editing tasks like adding parameters become easier!

For convenience, I've inserted a `!' sign to denote the location of the cursor...

Step 1:

  printf(      
         "for %s\n"
         "   mat %s\n"
         "      ting %s\n"
         "           string %s\n"!,   ← start before ','
         param1,
         param2,
         param3,
         param4);

Step 2:

Type "newline" and the additional string; the comma moves with the cursor, and stays one step ahead.

  printf(      
         "for %s\n"
         "   mat %s\n"
         "      ting %s\n"
         "           string %s\n"
         "                     addition %s\n"!,  ← still the same comma...
         param1,
         param2,
         param3,
         param4);

Step 3:

Move to the location of the next desired change.

  printf(      
         "for %s\n"
         "   mat %s\n"
         "      ting %s\n"
         "           string %s\n"
         "                     addition %s\n",
         param1,
         param2,
         param3,
         param4!);    ← but can we insert without deleting?

Step 4:

Once again, the close bracket stays one step ahead of the cursor, so just type "comma newline tab param5":

  printf(      
         "for %s\n"
         "   mat %s\n"
         "      ting %s\n"
         "           string %s\n"
         "                     addition %s\n",
         param1,
         param2,
         param3,
         param4,
         param5!);    ← no text was wasted...

It's easy enough that I edited the examples in the Netscape text editor without deleting anything.

Aren't you glad you don't use vi?