From bd997ea8d727d70df7e246595e55afa45902fb49 Mon Sep 17 00:00:00 2001
From: Simon Ruderich <simon@ruderich.org>
Date: Sun, 3 Jun 2018 18:08:25 +0200
Subject: [PATCH] Always use single quotes for printf format string

"\n" is literal, but causes a warning in shellcheck. As single quotes
are better suited for the format string (they interpolate nothing)
switch to single quotes.
---
 lib.sh                   | 10 +++++-----
 shell/crontab.d/setup.sh |  4 ++--
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib.sh b/lib.sh
index 6df5311..6a61902 100644
--- a/lib.sh
+++ b/lib.sh
@@ -151,19 +151,19 @@ link() {
     # Abort if the target file exists and is no symbolic link. Prevents
     # overwriting real files.
     if test -e "$target" && test ! -h "$target"; then
-        printf "link(): target '%s' exists already and is no symbolic link!\n" \
+        printf 'link(): target "%s" exists already and is no symbolic link!\n' \
                "$target" >&2
         exit 1
     fi
 
     # Make sure the source exists.
     if test ! -e "$source"; then
-        printf "link(): source '%s' doesn't exist!\n" "$source" >&2
+        printf 'link(): source "%s" does not exist!\n' "$source" >&2
         exit 1
     fi
 
     # Create the new symbolic link; remove the old one if necessary.
-    printf "link(): linking '%s' to '%s'\n" "$source" "$target"
+    printf 'link(): linking "%s" to "%s"\n' "$source" "$target"
     rm -f "$target"
     ln -s "$source" "$target"
 
@@ -193,14 +193,14 @@ generate() {
         file_tmp="$file.tmp"
     else
         # We only need this message if we generate a new file.
-        printf "%s: generating from '%s' (%s)\n" \
+        printf '%s: generating from "%s" (%s)\n' \
             "$file" "$file$extension" "$1"
 
         echo '###################################'  >"$file"
         echo '# WARNING! DO NOT EDIT THIS FILE! #' >>"$file"
         echo '###################################' >>"$file"
         echo >>"$file"
-        printf "# It was generated from '%s' on %s.\n" \
+        printf '# It was generated from "%s" on %s.\n' \
             "$file$extension" "`date`" >>"$file"
         echo >>"$file"
 
diff --git a/shell/crontab.d/setup.sh b/shell/crontab.d/setup.sh
index 46ebb56..603e301 100755
--- a/shell/crontab.d/setup.sh
+++ b/shell/crontab.d/setup.sh
@@ -50,7 +50,7 @@ echo '###################################'  >"$CRONTAB"
 echo "$HEADER_WARNING"                     >>"$CRONTAB"
 echo '###################################' >>"$CRONTAB"
 echo >>"$CRONTAB"
-printf "# It was generated from '%s/*' on %s." \
+printf '# It was generated from "%s/*" on %s.' \
     "$DIRECTORY" "`LANG=C date '+%a, %d %b %Y %H:%M:%S %z'`" >>"$CRONTAB"
 
 # Enforce C sort order.
@@ -64,7 +64,7 @@ for file in "$DIRECTORY"/crontab.*; do
         break
     fi
 
-    printf "Found '%s'.\n" "$file"
+    printf 'Found "%s".\n' "$file"
 
     printf '\n\n## %s:\n' "$file" >>"$CRONTAB"
 
-- 
2.45.2