fix #768

dist/inputmask/jquery.inputmask.js

@@ -528,10 +528,13 @@
         function writeBuffer(input, buffer, caretPos, event, triggerInputEvent) {
             if (event && $.isFunction(opts.onBeforeWrite)) {
                 var result = opts.onBeforeWrite.call(input, event, buffer, caretPos, opts);
-                if (result && result.refreshFromBuffer) {
-                    var refresh = result.refreshFromBuffer;
-                    refreshFromBuffer(refresh === !0 ? refresh : refresh.start, refresh.end, result.buffer), 
-                    resetMaskSet(!0), caretPos = result.caret || caretPos;
+                if (result) {
+                    if (result.refreshFromBuffer) {
+                        var refresh = result.refreshFromBuffer;
+                        refreshFromBuffer(refresh === !0 ? refresh : refresh.start, refresh.end, result.buffer), 
+                        resetMaskSet(!0);
+                    }
+                    caretPos = result.caret || caretPos;
                 }
             }
             input._valueSet(buffer.join("")), void 0 != caretPos && caret(input, caretPos), 

dist/inputmask/jquery.inputmask.numeric.extensions.js

@@ -85,7 +85,7 @@
                 }
                 if (opts.autoGroup) {
                     var rslt = opts.postFormat(buffer, caretPos - 1, !0, opts);
-                    return rslt.caret = rslt.pos + 1, rslt;
+                    return rslt.caret = 0 == caretPos ? caretPos : rslt.pos + 1, rslt;
                 }
             },
             regex: {

dist/jquery.inputmask.bundle.js

@@ -526,10 +526,13 @@
         function writeBuffer(input, buffer, caretPos, event, triggerInputEvent) {
             if (event && $.isFunction(opts.onBeforeWrite)) {
                 var result = opts.onBeforeWrite.call(input, event, buffer, caretPos, opts);
-                if (result && result.refreshFromBuffer) {
-                    var refresh = result.refreshFromBuffer;
-                    refreshFromBuffer(refresh === !0 ? refresh : refresh.start, refresh.end, result.buffer), 
-                    resetMaskSet(!0), caretPos = result.caret || caretPos;
+                if (result) {
+                    if (result.refreshFromBuffer) {
+                        var refresh = result.refreshFromBuffer;
+                        refreshFromBuffer(refresh === !0 ? refresh : refresh.start, refresh.end, result.buffer), 
+                        resetMaskSet(!0);
+                    }
+                    caretPos = result.caret || caretPos;
                 }
             }
             input._valueSet(buffer.join("")), void 0 != caretPos && caret(input, caretPos), 
@@ -1875,7 +1878,7 @@
                 }
                 if (opts.autoGroup) {
                     var rslt = opts.postFormat(buffer, caretPos - 1, !0, opts);
-                    return rslt.caret = rslt.pos + 1, rslt;
+                    return rslt.caret = 0 == caretPos ? caretPos : rslt.pos + 1, rslt;
                 }
             },
             regex: {

js/jquery.inputmask.js

@@ -958,11 +958,13 @@
             function writeBuffer(input, buffer, caretPos, event, triggerInputEvent) {
                 if (event && $.isFunction(opts.onBeforeWrite)) {
                     var result = opts.onBeforeWrite.call(input, event, buffer, caretPos, opts);
-                    if (result && result["refreshFromBuffer"]) {
-                        var refresh = result["refreshFromBuffer"];
-                        refreshFromBuffer(refresh === true ? refresh : refresh["start"], refresh["end"], result["buffer"]);
+                    if (result) {
+                        if (result["refreshFromBuffer"]) {
+                            var refresh = result["refreshFromBuffer"];
+                            refreshFromBuffer(refresh === true ? refresh : refresh["start"], refresh["end"], result["buffer"]);
 
-                        resetMaskSet(true);
+                            resetMaskSet(true);
+                        }
                         caretPos = result.caret || caretPos;
                     }
                 }

js/jquery.inputmask.numeric.extensions.js

@@ -139,7 +139,7 @@ Optional extensions on the jquery.inputmask base
 
                 if (opts.autoGroup) {
                     var rslt = opts.postFormat(buffer, caretPos - 1, true, opts);
-                    rslt.caret = rslt.pos + 1;
+                    rslt.caret = caretPos == 0 ? caretPos : rslt.pos + 1;
                     return rslt;
                 }
             },