From 0a6adc26e2efd2dcfb3e65407623287e08989a63 Mon Sep 17 00:00:00 2001
From: Taylor Blau <me@ttaylorr.com>
Date: Thu, 6 Jan 2022 14:50:15 -0500
Subject: grep: use grep_and_expr() in compile_pattern_and()

In a similar spirit as a previous commit, use the new `grep_and_expr()`
to construct the AND node in `compile_pattern_and()`.

Unlike the aforementioned previous commit, this is not about code
duplication, since this is the only spot in grep.c where an AND node is
constructed. Rather, this is about visual consistency with the other
`compile_pattern_xyz()` functions.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/grep.c b/grep.c
index d772fe6..7a1c52c 100644
--- a/grep.c
+++ b/grep.c
@@ -619,6 +619,11 @@ static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *
 	return grep_binexp(GREP_NODE_OR, left, right);
 }
 
+static struct grep_expr *grep_and_expr(struct grep_expr *left, struct grep_expr *right)
+{
+	return grep_binexp(GREP_NODE_AND, left, right);
+}
+
 static struct grep_expr *compile_pattern_or(struct grep_pat **);
 static struct grep_expr *compile_pattern_atom(struct grep_pat **list)
 {
@@ -674,7 +679,7 @@ static struct grep_expr *compile_pattern_not(struct grep_pat **list)
 static struct grep_expr *compile_pattern_and(struct grep_pat **list)
 {
 	struct grep_pat *p;
-	struct grep_expr *x, *y, *z;
+	struct grep_expr *x, *y;
 
 	x = compile_pattern_not(list);
 	p = *list;
@@ -687,11 +692,7 @@ static struct grep_expr *compile_pattern_and(struct grep_pat **list)
 		y = compile_pattern_and(list);
 		if (!y)
 			die("--and not followed by pattern expression");
-		CALLOC_ARRAY(z, 1);
-		z->node = GREP_NODE_AND;
-		z->u.binary.left = x;
-		z->u.binary.right = y;
-		return z;
+		return grep_and_expr(x, y);
 	}
 	return x;
 }
-- 
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