--- a/toys/posix/cal.c	Tue Nov 13 16:13:45 2012 -0600
+++ b/toys/posix/cal.c	Tue Nov 13 17:14:08 2012 -0600
@@ -1,6 +1,4 @@
-/* vi: set sw=4 ts=4:
- *
- * cal.c - show calendar.
+/* cal.c - show calendar.
  *
  * Copyright 2011 Rob Landley <rob@landley.net>
  *
@@ -9,14 +7,14 @@
 USE_CAL(NEWTOY(cal, ">2", TOYFLAG_USR|TOYFLAG_BIN))
 
 config CAL
-	bool "cal"
-	default y
-	help
-	  usage: cal [[month] year]
-	  Print a calendar.
+  bool "cal"
+  default y
+  help
+    usage: cal [[month] year]
+    Print a calendar.
 
-	  With one argument, prints all months of the specified year.
-	  With two arguments, prints calendar for month and year.
+    With one argument, prints all months of the specified year.
+    With two arguments, prints calendar for month and year.
 */
 
 #include "toys.h"
@@ -26,51 +24,51 @@
 
 static char *calstrings(char *buf, struct tm *tm)
 {
-	char temp[21];
-	int wday, mday, start, len, line;
+  char temp[21];
+  int wday, mday, start, len, line;
 
-	// header
-	len = strftime(temp, 21, "%B %Y", tm);
-	len += (20-len)/2;
-	buf += sprintf(buf, "%*s%*s ", len, temp, 20-len, "");
-	buf++;
-	buf += sprintf(buf, "Su Mo Tu We Th Fr Sa ");
-	buf++;
+  // header
+  len = strftime(temp, 21, "%B %Y", tm);
+  len += (20-len)/2;
+  buf += sprintf(buf, "%*s%*s ", len, temp, 20-len, "");
+  buf++;
+  buf += sprintf(buf, "Su Mo Tu We Th Fr Sa ");
+  buf++;
 
-	// What day of the week does this month start on?
-	if (tm->tm_mday>1)
-		start = (36+tm->tm_wday-tm->tm_mday)%7;
-	else start = tm->tm_wday;
+  // What day of the week does this month start on?
+  if (tm->tm_mday>1)
+    start = (36+tm->tm_wday-tm->tm_mday)%7;
+  else start = tm->tm_wday;
 
-	// What day does this month end on?  Alas, libc doesn't tell us...
-	len = 31;
-	if (tm->tm_mon == 1) {
-		int year = tm->tm_year;
-		len = 28;
-		if (!(year & 3) && !((year&100) && !(year&400))) len++;
-	} else if ((tm->tm_mon+(tm->tm_mon>6 ? 1 : 0)) & 1) len = 30;
+  // What day does this month end on?  Alas, libc doesn't tell us...
+  len = 31;
+  if (tm->tm_mon == 1) {
+    int year = tm->tm_year;
+    len = 28;
+    if (!(year & 3) && !((year&100) && !(year&400))) len++;
+  } else if ((tm->tm_mon+(tm->tm_mon>6 ? 1 : 0)) & 1) len = 30;
 
-	for (mday=line=0;line<6;line++) {
-		for (wday=0; wday<7; wday++) {
-			char *pat = "   ";
-			if (!mday ? wday==start : mday<len) {
-				pat = "%2d ";
-				mday++;
-			}
-			buf += sprintf(buf, pat, mday);
-		}
-		buf++;
-	}
+  for (mday=line=0;line<6;line++) {
+    for (wday=0; wday<7; wday++) {
+      char *pat = "   ";
+      if (!mday ? wday==start : mday<len) {
+        pat = "%2d ";
+        mday++;
+      }
+      buf += sprintf(buf, pat, mday);
+    }
+    buf++;
+  }
 
-	return buf;
+  return buf;
 }
 
 void xcheckrange(long val, long low, long high)
 {
-	char *err = "%ld %s than %ld";
+  char *err = "%ld %s than %ld";
 
-	if (val < low) error_exit(err, val, "less", low);
-	if (val > high) error_exit(err, val, "greater", high);
+  if (val < low) error_exit(err, val, "less", low);
+  if (val > high) error_exit(err, val, "greater", high);
 }
 
 // Worst case scenario toybuf usage: sizeof(struct tm) plus 21 bytes/line
@@ -78,57 +76,57 @@
 
 void cal_main(void)
 {
-	struct tm *tm;
-	char *buf = toybuf;
+  struct tm *tm;
+  char *buf = toybuf;
 
-	if (toys.optc) {
-		// Conveniently starts zeroed
-		tm = (struct tm *)toybuf;
-		buf += sizeof(struct tm);
+  if (toys.optc) {
+    // Conveniently starts zeroed
+    tm = (struct tm *)toybuf;
+    buf += sizeof(struct tm);
 
-		// Last argument is year, one before that (if any) is month.
-		xcheckrange(tm->tm_year = atol(toys.optargs[--toys.optc]),1,9999);
-		tm->tm_year -= 1900;
-		tm->tm_mday = 1;
-		tm->tm_hour = 12;  // noon to avoid timezone weirdness
-		if (toys.optc) {
-			xcheckrange(tm->tm_mon = atol(toys.optargs[--toys.optc]),1,12);
-			tm->tm_mon--;
+    // Last argument is year, one before that (if any) is month.
+    xcheckrange(tm->tm_year = atol(toys.optargs[--toys.optc]),1,9999);
+    tm->tm_year -= 1900;
+    tm->tm_mday = 1;
+    tm->tm_hour = 12;  // noon to avoid timezone weirdness
+    if (toys.optc) {
+      xcheckrange(tm->tm_mon = atol(toys.optargs[--toys.optc]),1,12);
+      tm->tm_mon--;
 
-		// Print 12 months of the year
+    // Print 12 months of the year
 
-		} else {
-			char *bufs[12];
-			int i, j, k;
+    } else {
+      char *bufs[12];
+      int i, j, k;
 
-			for (i=0; i<12; i++) {
-				tm->tm_mon=i;
-				mktime(tm);
-				buf = calstrings(bufs[i]=buf, tm);
-			}
+      for (i=0; i<12; i++) {
+        tm->tm_mon=i;
+        mktime(tm);
+        buf = calstrings(bufs[i]=buf, tm);
+      }
 
-			// 4 rows, 6 lines each, 3 columns
-			for (i=0; i<4; i++) {
-				for (j=0; j<8; j++) {
-					for(k=0; k<3; k++) {
-						char **b = bufs+(k+i*3);
-						*b += printf("%s ", *b);
-					}
-					puts("");
-				}
-			}
-			return;
-		}
+      // 4 rows, 6 lines each, 3 columns
+      for (i=0; i<4; i++) {
+        for (j=0; j<8; j++) {
+          for(k=0; k<3; k++) {
+            char **b = bufs+(k+i*3);
+            *b += printf("%s ", *b);
+          }
+          puts("");
+        }
+      }
+      return;
+    }
 
-		// What day of the week does that start on?
-		mktime(tm);
+    // What day of the week does that start on?
+    mktime(tm);
 
-	} else {
-		time_t now;
-		time(&now);
-		tm = localtime(&now);
-	}
+  } else {
+    time_t now;
+    time(&now);
+    tm = localtime(&now);
+  }
 
-	calstrings(buf, tm);
-	while (*buf) buf += printf("%s\n", buf);
+  calstrings(buf, tm);
+  while (*buf) buf += printf("%s\n", buf);
 }