make: fix incorrect handling of escaped newline

Fix a bug in process_command() where an escaped newline followed
by a character other than tab resulted in premature termination
of the command.

1 files changed, 4 insertions, 5 deletions

diff --git a/miscutils/make.c b/miscutils/make.c
index b92819266..21d0ede51 100644
--- a/miscutils/make.c
+++ b/miscutils/make.c
@@ -1402,11 +1402,10 @@ process_command(char *s)
         // Remove tab following escaped newline.  Stop processing at a
         // non-escaped newline.
         for (t = u = s; *u && *u != '\n'; u++) {
-                if (u[0] == '\\' && u[1] == '\n' && u[2] == '\t') {
-                        *t++ = *u++;
-                        *t++ = *u++;
-                } else {
-                        *t++ = *u;
+                *t++ = *u;
+                if (u[0] == '\\' && u[1] == '\n') {
+                        *t++ = '\n';
+                        u += (u[2] == '\t') ? 2 : 1;
                 }
         }
         *t = '\0';