Allow passing parameters to branch_delete and stash_show (#312)

Author: sandr01d

bin/git-forgit

@@ -212,9 +212,11 @@ _forgit_reset_head() {
 # git stash viewer
 _forgit_stash_show() {
     _forgit_inside_work_tree || return 1
-    local git_stash_list cmd opts
+    local git_stash_show git_stash_list cmd opts
+    git_stash_show="git stash show --color=always --ext-diff"
+    [[ $# -ne 0 ]] && $git_stash_show "$@" && return
     git_stash_list="git stash list $FORGIT_STASH_SHOW_GIT_OPTS"
-    cmd="echo {} |cut -d: -f1 |xargs -I% git stash show --color=always --ext-diff % |$_forgit_diff_pager"
+    cmd="echo {} |cut -d: -f1 |xargs -I% $git_stash_show % |$_forgit_diff_pager"
     opts="
         $FORGIT_FZF_DEFAULT_OPTS
         +s +m -0 --tiebreak=index --bind=\"enter:execute($cmd | $_forgit_enter_pager)\"
@@ -517,6 +519,7 @@ _forgit_branch_delete() {
     _forgit_inside_work_tree || return 1
     local git_branch preview opts cmd branches
     git_branch="git branch $FORGIT_BRANCH_DELETE_GIT_OPTS"
+    [[ $# -ne 0 ]] && $git_branch -D "$@" && return
     preview="git log {1} $_forgit_log_preview_options"
 
     opts="