maint: prep for global quoting changes: handle irregular cases manually

* src/chroot.c (usage): Change ``...'' to '...', and describe the
default more accurately (also adding quotes): s,/bin/sh,'/bin/sh -i',
* src/join.c (usage): Change ` ...'' ' to "...''".
* src/fmt.c (isopen): Change `' to '` in list of bytes, so that
a subsequent change can safely perform the `...' to '...' conversion.
* src/truncate.c (main): Tweak quoting in comments to use '...',
not `...`, for consistency with the rest of comments in coreutils.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fmt.c b/src/fmt.c
index e8aaebfd6..42e7bbc7c 100644
--- a/src/fmt.c
+++ b/src/fmt.c
@@ -116,7 +116,7 @@ typedef long int COST;
 
 /* Extra ctype(3)-style macros.  */
 
-#define isopen(c)	(strchr ("([`'\"", c) != NULL)
+#define isopen(c)	(strchr ("(['`\"", c) != NULL)
 #define isclose(c)	(strchr (")]'\"", c) != NULL)
 #define isperiod(c)	(strchr (".?!", c) != NULL)