From 9018c27ba414869008400d7b11f811cbac6a3ff8 Mon Sep 17 00:00:00 2001
From: lspitzner <lsp@informatik.uni-kiel.de>
Date: Sun, 3 Apr 2016 00:05:27 +0200
Subject: [PATCH] Fix bash-completion after "--"

#3272 accidentally disabled completions at the start of flags,
e.g. on "cabal install --".
[CI SKIP]
---
 cabal-install/bash-completion/cabal | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/cabal-install/bash-completion/cabal b/cabal-install/bash-completion/cabal
index 36d7feee61d..985399b86ce 100644
--- a/cabal-install/bash-completion/cabal
+++ b/cabal-install/bash-completion/cabal
@@ -55,11 +55,16 @@ _cabal_subcommands()
 
 __cabal_has_doubledash ()
 {
-    for w in "${COMP_WORDS[@]}"
-    do
-        if [ "--" == "$w" ]; then
+    local c=1
+    # Ignore the last word, because it is replaced anyways.
+    # This allows expansion for flags on "cabal foo --",
+    # but does not try to complete after "cabal foo -- ".
+    local n=$((${#COMP_WORDS[@]} - 1))
+    while [ $c -lt $n ]; do
+        if [ "--" = "${COMP_WORDS[c]}" ]; then
             return 0
         fi
+        ((c++))
     done
     return 1
 }