diff --git a/jcmarker.c b/jcmarker.c
index 4fbece4..62aeb59 100644
--- a/jcmarker.c
+++ b/jcmarker.c
@@ -17,7 +17,7 @@
 #include "jpegcomp.h"
 
 
-typedef enum {			/* JPEG marker codes */
+typedef enum {                  /* JPEG marker codes */
   M_SOF0  = 0xc0,
   M_SOF1  = 0xc1,
   M_SOF2  = 0xc2,
@@ -173,7 +173,7 @@
       /* The table entries must be emitted in zigzag order. */
       unsigned int qval = qtbl->quantval[jpeg_natural_order[i]];
       if (prec)
-	emit_byte(cinfo, (int) (qval >> 8));
+        emit_byte(cinfo, (int) (qval >> 8));
       emit_byte(cinfo, (int) (qval & 0xFF));
     }
 
@@ -190,33 +190,33 @@
 {
   JHUFF_TBL * htbl;
   int length, i;
-  
+
   if (is_ac) {
     htbl = cinfo->ac_huff_tbl_ptrs[index];
-    index += 0x10;		/* output index has AC bit set */
+    index += 0x10;              /* output index has AC bit set */
   } else {
     htbl = cinfo->dc_huff_tbl_ptrs[index];
   }
 
   if (htbl == NULL)
     ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, index);
-  
+
   if (! htbl->sent_table) {
     emit_marker(cinfo, M_DHT);
-    
+
     length = 0;
     for (i = 1; i <= 16; i++)
       length += htbl->bits[i];
-    
+
     emit_2bytes(cinfo, length + 2 + 1 + 16);
     emit_byte(cinfo, index);
-    
+
     for (i = 1; i <= 16; i++)
       emit_byte(cinfo, htbl->bits[i]);
-    
+
     for (i = 0; i < length; i++)
       emit_byte(cinfo, htbl->huffval[i]);
-    
+
     htbl->sent_table = TRUE;
   }
 }
@@ -258,12 +258,12 @@
 
     for (i = 0; i < NUM_ARITH_TBLS; i++) {
       if (dc_in_use[i]) {
-	emit_byte(cinfo, i);
-	emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
+        emit_byte(cinfo, i);
+        emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
       }
       if (ac_in_use[i]) {
-	emit_byte(cinfo, i + 0x10);
-	emit_byte(cinfo, cinfo->arith_ac_K[i]);
+        emit_byte(cinfo, i + 0x10);
+        emit_byte(cinfo, cinfo->arith_ac_K[i]);
       }
     }
   }
@@ -276,8 +276,8 @@
 /* Emit a DRI marker */
 {
   emit_marker(cinfo, M_DRI);
-  
-  emit_2bytes(cinfo, 4);	/* fixed length */
+
+  emit_2bytes(cinfo, 4);        /* fixed length */
 
   emit_2bytes(cinfo, (int) cinfo->restart_interval);
 }
@@ -289,9 +289,9 @@
 {
   int ci;
   jpeg_component_info *compptr;
-  
+
   emit_marker(cinfo, code);
-  
+
   emit_2bytes(cinfo, 3 * cinfo->num_components + 2 + 5 + 1); /* length */
 
   /* Make sure image isn't bigger than SOF field can handle */
@@ -320,13 +320,13 @@
 {
   int i, td, ta;
   jpeg_component_info *compptr;
-  
+
   emit_marker(cinfo, M_SOS);
-  
+
   emit_2bytes(cinfo, 2 * cinfo->comps_in_scan + 2 + 1 + 3); /* length */
-  
+
   emit_byte(cinfo, cinfo->comps_in_scan);
-  
+
   for (i = 0; i < cinfo->comps_in_scan; i++) {
     compptr = cinfo->cur_comp_info[i];
     emit_byte(cinfo, compptr->component_id);
@@ -354,22 +354,22 @@
 /* Emit a JFIF-compliant APP0 marker */
 {
   /*
-   * Length of APP0 block	(2 bytes)
-   * Block ID			(4 bytes - ASCII "JFIF")
-   * Zero byte			(1 byte to terminate the ID string)
-   * Version Major, Minor	(2 bytes - major first)
-   * Units			(1 byte - 0x00 = none, 0x01 = inch, 0x02 = cm)
-   * Xdpu			(2 bytes - dots per unit horizontal)
-   * Ydpu			(2 bytes - dots per unit vertical)
-   * Thumbnail X size		(1 byte)
-   * Thumbnail Y size		(1 byte)
+   * Length of APP0 block       (2 bytes)
+   * Block ID                   (4 bytes - ASCII "JFIF")
+   * Zero byte                  (1 byte to terminate the ID string)
+   * Version Major, Minor       (2 bytes - major first)
+   * Units                      (1 byte - 0x00 = none, 0x01 = inch, 0x02 = cm)
+   * Xdpu                       (2 bytes - dots per unit horizontal)
+   * Ydpu                       (2 bytes - dots per unit vertical)
+   * Thumbnail X size           (1 byte)
+   * Thumbnail Y size           (1 byte)
    */
-  
+
   emit_marker(cinfo, M_APP0);
-  
+
   emit_2bytes(cinfo, 2 + 4 + 1 + 2 + 1 + 2 + 2 + 1 + 1); /* length */
 
-  emit_byte(cinfo, 0x4A);	/* Identifier: ASCII "JFIF" */
+  emit_byte(cinfo, 0x4A);       /* Identifier: ASCII "JFIF" */
   emit_byte(cinfo, 0x46);
   emit_byte(cinfo, 0x49);
   emit_byte(cinfo, 0x46);
@@ -379,7 +379,7 @@
   emit_byte(cinfo, cinfo->density_unit); /* Pixel size information */
   emit_2bytes(cinfo, (int) cinfo->X_density);
   emit_2bytes(cinfo, (int) cinfo->Y_density);
-  emit_byte(cinfo, 0);		/* No thumbnail image */
+  emit_byte(cinfo, 0);          /* No thumbnail image */
   emit_byte(cinfo, 0);
 }
 
@@ -389,12 +389,12 @@
 /* Emit an Adobe APP14 marker */
 {
   /*
-   * Length of APP14 block	(2 bytes)
-   * Block ID			(5 bytes - ASCII "Adobe")
-   * Version Number		(2 bytes - currently 100)
-   * Flags0			(2 bytes - currently 0)
-   * Flags1			(2 bytes - currently 0)
-   * Color transform		(1 byte)
+   * Length of APP14 block      (2 bytes)
+   * Block ID                   (5 bytes - ASCII "Adobe")
+   * Version Number             (2 bytes - currently 100)
+   * Flags0                     (2 bytes - currently 0)
+   * Flags1                     (2 bytes - currently 0)
+   * Color transform            (1 byte)
    *
    * Although Adobe TN 5116 mentions Version = 101, all the Adobe files
    * now in circulation seem to use Version = 100, so that's what we write.
@@ -403,28 +403,28 @@
    * YCbCr, 2 if it's YCCK, 0 otherwise.  Adobe's definition has to do with
    * whether the encoder performed a transformation, which is pretty useless.
    */
-  
+
   emit_marker(cinfo, M_APP14);
-  
+
   emit_2bytes(cinfo, 2 + 5 + 2 + 2 + 2 + 1); /* length */
 
-  emit_byte(cinfo, 0x41);	/* Identifier: ASCII "Adobe" */
+  emit_byte(cinfo, 0x41);       /* Identifier: ASCII "Adobe" */
   emit_byte(cinfo, 0x64);
   emit_byte(cinfo, 0x6F);
   emit_byte(cinfo, 0x62);
   emit_byte(cinfo, 0x65);
-  emit_2bytes(cinfo, 100);	/* Version */
-  emit_2bytes(cinfo, 0);	/* Flags0 */
-  emit_2bytes(cinfo, 0);	/* Flags1 */
+  emit_2bytes(cinfo, 100);      /* Version */
+  emit_2bytes(cinfo, 0);        /* Flags0 */
+  emit_2bytes(cinfo, 0);        /* Flags1 */
   switch (cinfo->jpeg_color_space) {
   case JCS_YCbCr:
-    emit_byte(cinfo, 1);	/* Color transform = 1 */
+    emit_byte(cinfo, 1);        /* Color transform = 1 */
     break;
   case JCS_YCCK:
-    emit_byte(cinfo, 2);	/* Color transform = 2 */
+    emit_byte(cinfo, 2);        /* Color transform = 2 */
     break;
   default:
-    emit_byte(cinfo, 0);	/* Color transform = 0 */
+    emit_byte(cinfo, 0);        /* Color transform = 0 */
     break;
   }
 }
@@ -442,12 +442,12 @@
 write_marker_header (j_compress_ptr cinfo, int marker, unsigned int datalen)
 /* Emit an arbitrary marker header */
 {
-  if (datalen > (unsigned int) 65533)		/* safety check */
+  if (datalen > (unsigned int) 65533)           /* safety check */
     ERREXIT(cinfo, JERR_BAD_LENGTH);
 
   emit_marker(cinfo, (JPEG_MARKER) marker);
 
-  emit_2bytes(cinfo, (int) (datalen + 2));	/* total length */
+  emit_2bytes(cinfo, (int) (datalen + 2));      /* total length */
 }
 
 METHODDEF(void)
@@ -474,12 +474,12 @@
 {
   my_marker_ptr marker = (my_marker_ptr) cinfo->marker;
 
-  emit_marker(cinfo, M_SOI);	/* first the SOI */
+  emit_marker(cinfo, M_SOI);    /* first the SOI */
 
   /* SOI is defined to reset restart interval to 0 */
   marker->last_restart_interval = 0;
 
-  if (cinfo->write_JFIF_header)	/* next an optional JFIF APP0 */
+  if (cinfo->write_JFIF_header) /* next an optional JFIF APP0 */
     emit_jfif_app0(cinfo);
   if (cinfo->write_Adobe_marker) /* next an optional Adobe APP14 */
     emit_adobe_app14(cinfo);
@@ -500,7 +500,7 @@
   int ci, prec;
   boolean is_baseline;
   jpeg_component_info *compptr;
-  
+
   /* Emit DQT for each quantization table.
    * Note that emit_dqt() suppresses any duplicate tables.
    */
@@ -520,9 +520,9 @@
   } else {
     is_baseline = TRUE;
     for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
-	 ci++, compptr++) {
+         ci++, compptr++) {
       if (compptr->dc_tbl_no > 1 || compptr->ac_tbl_no > 1)
-	is_baseline = FALSE;
+        is_baseline = FALSE;
     }
     if (prec && is_baseline) {
       is_baseline = FALSE;
@@ -539,11 +539,11 @@
       emit_sof(cinfo, M_SOF9);  /* SOF code for sequential arithmetic */
   } else {
     if (cinfo->progressive_mode)
-      emit_sof(cinfo, M_SOF2);	/* SOF code for progressive Huffman */
+      emit_sof(cinfo, M_SOF2);  /* SOF code for progressive Huffman */
     else if (is_baseline)
-      emit_sof(cinfo, M_SOF0);	/* SOF code for baseline implementation */
+      emit_sof(cinfo, M_SOF0);  /* SOF code for baseline implementation */
     else
-      emit_sof(cinfo, M_SOF1);	/* SOF code for non-baseline Huffman file */
+      emit_sof(cinfo, M_SOF1);  /* SOF code for non-baseline Huffman file */
   }
 }
 
@@ -575,10 +575,10 @@
       compptr = cinfo->cur_comp_info[i];
       /* DC needs no table for refinement scan */
       if (cinfo->Ss == 0 && cinfo->Ah == 0)
-	emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
+        emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
       /* AC needs no table when not present */
       if (cinfo->Se)
-	emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
+        emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
     }
   }
 
@@ -627,9 +627,9 @@
   if (! cinfo->arith_code) {
     for (i = 0; i < NUM_HUFF_TBLS; i++) {
       if (cinfo->dc_huff_tbl_ptrs[i] != NULL)
-	emit_dht(cinfo, i, FALSE);
+        emit_dht(cinfo, i, FALSE);
       if (cinfo->ac_huff_tbl_ptrs[i] != NULL)
-	emit_dht(cinfo, i, TRUE);
+        emit_dht(cinfo, i, TRUE);
     }
   }
 
@@ -649,7 +649,7 @@
   /* Create the subobject */
   marker = (my_marker_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-				SIZEOF(my_marker_writer));
+                                SIZEOF(my_marker_writer));
   cinfo->marker = (struct jpeg_marker_writer *) marker;
   /* Initialize method pointers */
   marker->pub.write_file_header = write_file_header;