scc

commit 6c16ba816db23662111f988f271039da34613d5f
parent 61d2c4a237f7382611c30f613ec9862150c28abf
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Fri, 19 Jan 2024 12:53:21 +0100

make: Remove first tab in continuation cmd lines

As it is specified in POSIX:

	When an escaped <newline> is found in a command line in a
	makefile, the command line shall contain the <backslash>,
	the <newline>, and the next line, except that the first
	character of the next line shall not be included if it
	is a <tab>.

So, the first character of the continuation line must be removed
only if it is a tabulator.

Diffstat:
M
src/cmd/make/parser.c
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/cmd/make/parser.c b/src/cmd/make/parser.c
@@ -713,8 +713,11 @@ readcmd(void)
 		if (c == '\n')
 			break;
 		if (c == '\\') {
-			if ((c = nextc()) == '\n')
+			if ((c = nextc()) == '\n') {
+				if ((c = nextc()) != '\t')
+					back(c);
 				continue;
+			}
 			back(c);
 			c = '\\';
 		}