Implement missing 'space' formatting flag

This flag causes space (padding) to be reserved for the sign even if the
number is positive. It is basically the same as the 'plus' flag except that
a space is displayed instead of a plus sign. The 'plus' flag takes precedence.

1 files changed, 16 insertions, 4 deletions

diff --git a/src/library.js b/src/library.js
index 995fa2ab..2faa40d7 100644
--- a/src/library.js
+++ b/src/library.js
@@ -1974,6 +1974,7 @@ LibraryManager.library = {
         var flagLeftAlign = false;
         var flagAlternative = false;
         var flagZeroPad = false;
+        var flagPadSign = false;
         flagsLoop: while (1) {
           switch (next) {
             case {{{ charCode('+') }}}:
@@ -1992,6 +1993,9 @@ LibraryManager.library = {
                 flagZeroPad = true;
                 break;
               }
+            case {{{ charCode(' ') }}}:
+              flagPadSign = true;
+              break;
             default:
               break flagsLoop;
           }
@@ -2158,8 +2162,12 @@ LibraryManager.library = {
             }
 
             // Add sign if needed
-            if (flagAlwaysSigned && currArg >= 0) {
-              prefix = '+' + prefix;
+            if (currArg >= 0) {
+              if (flagAlwaysSigned) {
+                prefix = '+' + prefix;
+              } else if (flagPadSign) {
+                prefix = ' ' + prefix;
+              }
             }
 
             // Move sign to prefix so we zero-pad after the sign
@@ -2250,8 +2258,12 @@ LibraryManager.library = {
               if (next == {{{ charCode('E') }}}) argText = argText.toUpperCase();
 
               // Add sign.
-              if (flagAlwaysSigned && currArg >= 0) {
-                argText = '+' + argText;
+              if (currArg >= 0) {
+                if (flagAlwaysSigned) {
+                  argText = '+' + argText;
+                } else if (flagPadSign) {
+                  argText = ' ' + argText;
+                }
               }
             }