Completely replaced command-based snippets with a new, easier to read/maintain syntax. Also added a python script to make it easier to migrate.

snippets/c.snippets

@@ -0,0 +1,88 @@
+# main()
+snippet main
+	int main (int argc, char const* argv[])
+	{
+		${1}
+		return 0;
+	}
+# #include <...>
+snippet inc
+	#include <${1:stdio}.h>${2}
+# #include "..."
+snippet Inc
+	#include "${1:`Filename("$1.h")`}"${2}
+# #ifndef ... #define ... #endif
+snippet def
+	#ifndef $1
+	#define ${1:SYMBOL} ${2:value}
+	#endif${3}
+# Header Include-Guard
+# (the randomizer code is taken directly from TextMate; it could probably be
+# cleaner, I don't know how to do it in vim script)
+snippet once
+	#ifndef ${1:`toupper(Filename('', 'UNTITLED').'_'.system("/usr/bin/ruby -e 'print (rand * 2821109907455).round.to_s(36)'"))`}
+	
+	#define $1
+	
+	${2}
+	
+	#endif /* end of include guard: $1 */
+# If Condition
+snippet if
+	if (${1:/* condition */}) {
+		${2:/* code */}
+	}
+snippet el
+	else {
+		${1}
+	}
+# Tertiary conditional
+snippet t
+	${1:/* condition */} ? ${2:a} : ${3:b}
+# Do While Loop
+snippet do
+	do {
+		${2:/* code */}
+	} while (${1:/* condition */});
+# While Loop
+snippet wh
+	while (${1:/* condition */}) {
+		${2:/* code */}
+	}
+# For Loop
+snippet for
+	for (${2:i} = 0; $2 < ${1:count}; $2${3:++}) {
+		${4:/* code */}
+	}
+# Custom For Loop
+snippet forr
+	for (${1:i} = 0; ${2:$1 < 10}; $1${3:++}) {
+		${4:/* code */}
+	}
+# Function
+snippet fun
+	${1:void} ${2:function_name} (${3})
+	{
+		${4:/* code */}
+	}
+# Typedef
+snippet td
+	typedef ${1:int} ${2:MyCustomType};
+# Struct
+snippet st
+	struct ${1:`Filename('$1_t', 'name')`} {
+		${2:/* data */}
+	}${3: /* optional variable list */};${4}
+# Typedef struct
+snippet tds
+	typedef struct ${2:$1 }{
+		${3:/* data */}
+	} ${1:`Filename('$1_t', 'name')`};
+# printf
+# unfortunately version this isn't as nice as TextMates's, given the lack of a
+# dynamic `...`
+snippet pr
+	printf("${1:%s}\n"${2});${3}
+# fprintf (again, this isn't as nice as TextMate's version, but it works)
+snippet fpr
+	fprintf(${1:stderr}, "${2:%s}\n"${3});${4}