fix missing extglob

[tee-unique] / appendu-function

diff --git a/appendu-function b/appendu-function
index 8b03b0fb5f77af89f95eb5bdb83a33d8f4c52398..13a7d740cd51548714ce6ff28730af2a495a3ada 100644 (file)
--- a/appendu-function
+++ b/appendu-function
@@ -75,9 +75,13 @@ LINE_SETs are treated the same.
         sed -ie '$a\' "$file"
         # command substitution removes any trailing newlines, so we have to add
         # a non-newline ending, we randomly chose "b", then remove it.
-        local content=$(cat "$file"; echo b) content=${content%b}
+        local content=$(cat "$file"; echo b)
+        content=${content%b}
     fi
     
+    local reset_extglob=false
+    ! shopt extglob >/dev/null && reset_extglob=true
+    shopt -s extglob
     # we aren't using regex because we want to match strings,
     # but we also want our match to start at the beginning of a line,
     # or the beginning of the file, and to end at a line ending.
@@ -96,5 +100,6 @@ LINE_SETs are treated the same.
             fi
         fi
     done
+    $reset_extglob && shopt -u extglob 
     return 0
 }