diff3: improve style

(cherry picked from commit 702dda4368dc2d07e8898fcfdddb12d730e6c174)

1 files changed, 19 insertions, 17 deletions

diff --git a/usr.bin/diff3/diff3.c b/usr.bin/diff3/diff3.c
index 80d4a202728f..18daa54b2360 100644
--- a/usr.bin/diff3/diff3.c
+++ b/usr.bin/diff3/diff3.c
@@ -126,7 +126,7 @@ static int cline[3];		/* # of the last-read line in each file (0-2) */
  */
 static int last[4];
 static int Aflag, eflag, iflag, mflag, Tflag;
-static int oflag;		/* indicates whether to mark overlaps (-E or -X)*/
+static int oflag;		/* indicates whether to mark overlaps (-E or -X) */
 static int strip_cr;
 static char *f1mark, *f2mark, *f3mark;
 
@@ -170,9 +170,9 @@ static struct option longopts[] = {
 static void
 usage(void)
 {
-	fprintf(stderr, "usage: diff3 [-3aAeEimTxX] [-L lable1] [-L label2] "
-	    "[ -L label3] file1 file2 file3\n");
-	exit (2);
+	fprintf(stderr, "usage: diff3 [-3aAeEimTxX] [-L label1] [-L label2] "
+	    "[-L label3] file1 file2 file3\n");
+	exit(2);
 }
 
 static int
@@ -186,7 +186,7 @@ readin(int fd, struct diff **dd)
 	f = fdopen(fd, "r");
 	if (f == NULL)
 		err(2, "fdopen");
-	for (i=0; (p = getchange(f)); i++) {
+	for (i = 0; (p = getchange(f)); i++) {
 		if (i >= szchanges - 1)
 			increase();
 		a = b = (int)strtoimax(p, &p, 10);
@@ -196,7 +196,7 @@ readin(int fd, struct diff **dd)
 		}
 		kind = *p++;
 		c = d = (int)strtoimax(p, &p, 10);
-		if (*p==',') {
+		if (*p == ',') {
 			p++;
 			d = (int)strtoimax(p, &p, 10);
 		}
@@ -212,8 +212,8 @@ readin(int fd, struct diff **dd)
 		(*dd)[i].new.to = d;
 	}
 	if (i) {
-		(*dd)[i].old.from = (*dd)[i-1].old.to;
-		(*dd)[i].new.from = (*dd)[i-1].new.to;
+		(*dd)[i].old.from = (*dd)[i - 1].old.to;
+		(*dd)[i].new.from = (*dd)[i - 1].new.to;
 	}
 	fclose(f);
 	return (i);
@@ -222,9 +222,9 @@ readin(int fd, struct diff **dd)
 static int
 diffexec(const char *diffprog, char **diffargv, int fd[])
 {
-	int pid, pd;
+	int pd;
 
-	switch (pid = pdfork(&pd, PD_CLOEXEC)) {
+	switch (pdfork(&pd, PD_CLOEXEC)) {
 	case 0:
 		close(fd[0]);
 		if (dup2(fd[1], STDOUT_FILENO) == -1)
@@ -396,7 +396,7 @@ prange(struct range *rold)
 		printf("%da\n", rold->from - 1);
 	else {
 		printf("%d", rold->from);
-		if (rold->to > rold->from+1)
+		if (rold->to > rold->from + 1)
 			printf(",%d", rold->to - 1);
 		printf("c\n");
 	}
@@ -433,7 +433,7 @@ skip(int i, int from, const char *pr)
 		if ((line = get_line(fp[i], &j)) == NULL)
 			errx(EXIT_FAILURE, "logic error");
 		if (pr != NULL)
-			printf("%s%s", Tflag == 1? "\t" : pr, line);
+			printf("%s%s", Tflag == 1 ? "\t" : pr, line);
 		cline[i]++;
 	}
 	return ((int) n);
@@ -455,13 +455,13 @@ duplicate(struct range *r1, struct range *r2)
 	skip(0, r1->from, NULL);
 	skip(1, r2->from, NULL);
 	nchar = 0;
-	for (nline=0; nline < r1->to - r1->from; nline++) {
+	for (nline = 0; nline < r1->to - r1->from; nline++) {
 		do {
 			c = getc(fp[0]);
 			d = getc(fp[1]);
 			if (c == -1 && d == -1)
 				break;
-			if (c == -1 || d== -1)
+			if (c == -1 || d == -1)
 				errx(EXIT_FAILURE, "logic error");
 			nchar++;
 			if (c != d) {
@@ -482,6 +482,7 @@ repos(int nchar)
 	for (i = 0; i < 2; i++)
 		(void)fseek(fp[i], (long)-nchar, SEEK_CUR);
 }
+
 /*
  * collect an editing script for later regurgitation
  */
@@ -514,7 +515,7 @@ edscript(int n)
 		if (!oflag || !overlap[n]) {
 			prange(&de[n].old);
 		} else {
-			printf("%da\n", de[n].old.to -1);
+			printf("%da\n", de[n].old.to - 1);
 			if (Aflag) {
 				printf("%s\n", f2mark);
 				fseek(fp[1], de[n].old.from, SEEK_SET);
@@ -529,8 +530,9 @@ edscript(int n)
 			printf("=======\n");
 		}
 		fseek(fp[2], (long)de[n].new.from, SEEK_SET);
-		for (k = de[n].new.to - de[n].new.from; k > 0; k-= j) {
+		for (k = de[n].new.to - de[n].new.from; k > 0; k -= j) {
 			size_t r;
+
 			j = k > BUFSIZ ? BUFSIZ : k;
 			r = fread(block, 1, j, fp[2]);
 			if (r == 0) {
@@ -759,7 +761,7 @@ main(int argc, char **argv)
 		for (i = 0; i < nke; i++) {
 			status = e[i].data;
 			if (WIFEXITED(status) && WEXITSTATUS(status) >= 2)
-				errx(2, "diff exited abormally");
+				errx(2, "diff exited abnormally");
 			else if (WIFSIGNALED(status))
 				errx(2, "diff killed by signal %d",
 				    WTERMSIG(status));