Added support for %n in _formatString/printf.

3 files changed, 6 insertions, 2 deletions

diff --git a/src/library.js b/src/library.js
index 54256c44..b2c3d13c 100644
--- a/src/library.js
+++ b/src/library.js
@@ -340,8 +340,7 @@ var Library = {
           if (!flagLeftAlign) ret = ret.concat(getNextArg(next));
           textIndex += 2;
         } else if (next == 'n'.charCodeAt(0)) {
-          // TODO: Implement. Requires arguments to be passed in C-style.
-          // {{{ makeSetValue('argIndex', '0', 'ret.length', 'i32') }}}
+          {{{ makeSetValue('getNextArg("d")', '0', 'ret.length', 'i32') }}}
           textIndex += 2;
         } else {
           // TODO: Add support for a/A specifiers (hex float).
diff --git a/tests/printf/output.txt b/tests/printf/output.txt
index bdf9d0bc..be93561b 100644
--- a/tests/printf/output.txt
+++ b/tests/printf/output.txt
@@ -1,3 +1,5 @@
+ab1.23cd
+n=7
 
 Characters: a A
 Decimals: 1977 650000 12 4
diff --git a/tests/printf/test.c b/tests/printf/test.c
index ac662dca..e388ee9c 100644
--- a/tests/printf/test.c
+++ b/tests/printf/test.c
@@ -2,6 +2,9 @@
 #include <math.h>
 
 int main() {
+  int x;
+  printf("ab%gc%nd\n", 1.23f, &x);
+  printf("n=%d\n", x);
   printf("\n");
   printf("Characters: %c %c\n", 'a', 65);
   printf("Decimals: %d %ld %lld %d\n", 1977, 650000L, 12LL, 4);