core: fix dependency parsing

3d793d29059a7ddf5282efa6b32b953c183d7a4d broke parsing of unit file
names that include backslashes, as extract_first_word() strips those.
Fix this, by introducing a new EXTRACT_RETAIN_ESCAPE flag which disables
looking at any flags, thus being compatible with the classic
FOREACH_WORD() behaviour.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/basic/extract-word.h b/src/basic/extract-word.h
index ddc1c4f463..9606ab64b3 100644
--- a/src/basic/extract-word.h
+++ b/src/basic/extract-word.h
@@ -24,11 +24,12 @@
 #include "macro.h"
 
 typedef enum ExtractFlags {
-        EXTRACT_RELAX           = 1,
-        EXTRACT_CUNESCAPE       = 2,
-        EXTRACT_CUNESCAPE_RELAX = 4,
-        EXTRACT_QUOTES          = 8,
+        EXTRACT_RELAX                    = 1,
+        EXTRACT_CUNESCAPE                = 2,
+        EXTRACT_CUNESCAPE_RELAX          = 4,
+        EXTRACT_QUOTES                   = 8,
         EXTRACT_DONT_COALESCE_SEPARATORS = 16,
+        EXTRACT_RETAIN_ESCAPE            = 32,
 } ExtractFlags;
 
 int extract_first_word(const char **p, char **ret, const char *separators, ExtractFlags flags);