Support fully-quoted variables on command line

GRUB rewrites x="y" as "x=y".

1 files changed, 21 insertions, 3 deletions

diff --git a/init b/init
index af507c0..0eed64d 100755
--- a/init
+++ b/init
@@ -104,6 +104,11 @@ sensors-detect --auto
 # foo='foo fox'
 # bar="bar 'box'"
 #
+# Or (as rewritten by GRUB):
+#
+# 'foo=foo fox'
+# "bar=bar 'box'"
+#
 # First we separete quoted variables and arguments with newlines (giving
 # priority to assignments). Then we replace whitespaces with newline on
 # lines that don't contain quotes. Finally, clean up by removing blank
@@ -120,11 +125,24 @@ readarray -t cmdline < <(cat /proc/cmdline | \
 #
 info "command line:"
 for v in "${cmdline[@]}"; do
-  var="$(sed -n -re 's/^buildos\.([^=]+)=.*$/\1/p' <<<"$v")" # Extract name.
+
+  # Rewrite "x=y" as x="y" (as well as the single-quote variant).
+  #
+  v1="$(sed -n -re "s/^\"([^= ]+)=(.*)\"\$/\1=\"\2\"/p" <<<"$v")"
+  if [ -n "$v1" ]; then
+    v="$v1"
+  else
+    v1="$(sed -n -re "s/^'([^= ]+)=(.*)'\$/\1='\2'/p" <<<"$v")"
+    if [ -n "$v1" ]; then
+      v="$v1"
+    fi
+  fi
+
+  var="$(sed -n -re 's/^buildos\.([^= ]+)=.*$/\1/p' <<<"$v")" # Extract name.
 
   if [ -n "$var" ]; then
-    val="$(sed -re 's/^[^=]+=(.*)$/\1/' <<<"$v")"            # Extract value.
-    val="$(sed -re "s/^('(.*)'|\"(.*)\")$/\2\3/" <<<"$val")" # Strip quoted.
+    val="$(sed -re 's/^[^= ]+=(.*)$/\1/' <<<"$v")"            # Extract value.
+    val="$(sed -re "s/^('(.*)'|\"(.*)\")\$/\2\3/" <<<"$val")" # Strip quoted.
     info "  $var=$val"
 
     # If the variable contains a dot, then it is a toolchain variable and we