Examples:
a = 1
b= 2
c =3

Add tests for assignments with whitespace.
---
This fixes <https://todo.sr.ht/~sircmpwn/rc/20>.

 parse/command.ha | 16 ++++++++++++++++
 test/assign.rc   | 21 +++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/parse/command.ha b/parse/command.ha
index a696b17..c3b3678 100644
--- a/parse/command.ha
+++ b/parse/command.ha
@@ -74,12 +74,28 @@ fn parse_command(p: *parser) (ast::command | error) = {
 			defer free(parts);
 
 			if (len(parts) > 1 && len(parts[1]) != 0) {
+				// Example: x=4
 				lex::unlex(&p.lex, (ltok::ARGUMENT, parts[1]));
+			} else {
+				// Example: x= 4
+				ws(p, false)?;
 			};
 			lex::unlex(&p.lex, (ltok::EQUAL, ""));
 			lex::unlex(&p.lex, (ltok::WORD, parts[0]));
 			return parse_assignment(p)?;
 		};
+		const had_ws = ws(p, false)?;
+		if (peek(p, ltok::EQUAL)? is lex::token) {
+			// Example: x = 4 or x =4
+			want(p, ltok::EQUAL)?;
+			ws(p, false)?;
+			lex::unlex(&p.lex, (ltok::EQUAL, ""));
+			lex::unlex(&p.lex, (ltok::WORD, word));
+			return parse_assignment(p)?;
+		} else if (had_ws) {
+			// Example: x = 4 or x =4
+			lex::unlex(&p.lex, (ltok::WS, ""));
+		};
 
 		lex::unlex(&p.lex, (tok.0, word));
 		return parse_compound(p)?;
diff --git a/test/assign.rc b/test/assign.rc
index b5962f2..3337327 100644
--- a/test/assign.rc
+++ b/test/assign.rc
@@ -7,6 +7,27 @@ begin "Basic assignments"
 
 	x=20
 	test $x -eq 20 || fail 'expected $x to equal 20'
+
+	x = 30
+	test $x -eq 30 || fail 'expected $x to equal 30'
+
+	x =40
+	test $x -eq 40 || fail 'expected $x to equal 40'
+
+	x= 50
+	test $x -eq 50 || fail 'expected $x to equal 50'
+
+	x="60"
+	test $x -eq 60 || fail 'expected $x to equal 60'
+
+	x = "70"
+	test $x -eq 70 || fail 'expected $x to equal 70'
+
+	x ="80"
+	test $x -eq 80 || fail 'expected $x to equal 80'
+
+	x= "90"
+	test $x -eq 90 || fail 'expected $x to equal 90'
 }
 end
 
-- 
2.42.1