1 files changed, 81 insertions, 0 deletions
diff --git a/composer-bash-completion b/composer-bash-completion
new file mode 100644
index 0000000..a921aa7
--- /dev/null
+++ b/composer-bash-completion
@@ -0,0 +1,81 @@
+# This file is part of the Symfony package.
+#
+# (c) Fabien Potencier <fabien@symfony.com>
+#
+# For the full copyright and license information, please view
+# https://symfony.com/doc/current/contributing/code/license.html
+
+_sf_composer() {
+    # Use newline as only separator to allow space in completion values
+    IFS=$'\n'
+    local sf_cmd="${COMP_WORDS[0]}"
+
+    # for an alias, get the real script behind it
+    if [[ $(type -t $sf_cmd) == "alias" ]]; then
+        sf_cmd=$(alias $sf_cmd | sed -E "s/alias $sf_cmd='(.*)'/\1/")
+    fi
+
+    if [ ! -f "$sf_cmd" ]; then
+        return 1
+    fi
+
+    local cur prev words cword
+    _get_comp_words_by_ref -n := cur prev words cword
+
+    local completecmd=("$sf_cmd" "_complete" "-sbash" "-c$cword" "-S2.3.7")
+    for w in ${words[@]}; do
+        w=$(printf -- '%b' "$w")
+        # remove quotes from typed values
+        quote="${w:0:1}"
+        if [ "$quote" == \' ]; then
+            w="${w%\'}"
+            w="${w#\'}"
+        elif [ "$quote" == \" ]; then
+            w="${w%\"}"
+            w="${w#\"}"
+        fi
+        # empty values are ignored
+        if [ ! -z "$w" ]; then
+            completecmd+=("-i$w")
+        fi
+    done
+
+    local sfcomplete
+    if sfcomplete=$(${completecmd[@]} 2>&1); then
+        local quote suggestions
+        quote=${cur:0:1}
+
+        # Use single quotes by default if suggestions contains backslash (FQCN)
+        if [ "$quote" == '' ] && [[ "$sfcomplete" =~ \\ ]]; then
+            quote=\'
+        fi
+
+        if [ "$quote" == \' ]; then
+            # single quotes: no additional escaping (does not accept ' in values)
+            suggestions=$(for s in $sfcomplete; do printf $'%q%q%q\n' "$quote" "$s" "$quote"; done)
+        elif [ "$quote" == \" ]; then
+            # double quotes: double escaping for \ $ ` "
+            suggestions=$(for s in $sfcomplete; do
+                s=${s//\\/\\\\}
+                s=${s//\$/\\\$}
+                s=${s//\`/\\\`}
+                s=${s//\"/\\\"}
+                printf $'%q%q%q\n' "$quote" "$s" "$quote";
+            done)
+        else
+            # no quotes: double escaping
+            suggestions=$(for s in $sfcomplete; do printf $'%q\n' $(printf '%q' "$s"); done)
+        fi
+        COMPREPLY=($(IFS=$'\n' compgen -W "$suggestions" -- $(printf -- "%q" "$cur")))
+        __ltrim_colon_completions "$cur"
+    else
+        if [[ "$sfcomplete" != *"Command \"_complete\" is not defined."* ]]; then
+            >&2 echo
+            >&2 echo $sfcomplete
+        fi
+
+        return 1
+    fi
+}
+
+complete -F _sf_composer composer