Split out fish functions and add the right ssh key

fish/functions/fish_prompt.fish

@@ -1,21 +1,3 @@
-set -g __fish_prompt_hostname (hostname|cut -d . -f 1)
-
-function __fish_prompt_git_branch
-  set __git_branch (git current-branch ^ /dev/null)
-
-  if test -z $__git_branch
-    return
-  else if test $__git_branch = HEAD
-    set __rev (git log -1 --oneline ^ /dev/null)
-    if not test -z $__rev
-      echo -n (git log -1 --oneline | cut -d " " -f 1)
-    end
-  else
-    echo -n $__git_branch
-  end
-end
-
-####
 # Fish prompt
 # Looks like: user@host in cwd(branch)
 function fish_prompt
@@ -50,7 +32,7 @@ function fish_prompt
   set_color normal
   set_color blue
 
-  echo -n (hostname)
+  echo -n (nice_hostname)
 
   set_color normal
   set_color -o black
@@ -73,7 +55,7 @@ function fish_prompt
   # Git branch
   #
 
-  set branch (__fish_prompt_git_branch)
+  set branch (git_branch)
   if not test -z $branch
     echo -n "("
 

fish/functions/git_branch.fish

@@ -0,0 +1,15 @@
+function git_branch
+  set __git_branch (git current-branch ^ /dev/null)
+
+  if test -z $__git_branch
+    return
+  else if test $__git_branch = HEAD
+    set __rev (git log -1 --oneline ^ /dev/null)
+    if not test -z $__rev
+      echo -n (git log -1 --oneline | cut -d " " -f 1)
+    end
+  else
+    echo -n $__git_branch
+  end
+end
+

fish/functions/nice_hostname.fish

@@ -0,0 +1,4 @@
+function nice_hostname
+  hostname | cut -d . -f 1
+end
+

fish/functions/start_agent.fish

@@ -4,6 +4,6 @@ function start_agent
     echo "succeeded"
     chmod 600 $SSH_ENV 
     . $SSH_ENV > /dev/null
-    ssh-add
+    ssh-add "~/.ssh/id_(nice_hostname)"
 end
 

fish/functions/test_identities.fish

@@ -1,7 +1,7 @@
 function test_identities
     ssh-add -l | grep "The agent has no identities" > /dev/null
     if [ $status -eq 0 ]
-        ssh-add
+        ssh-add "~/.ssh/id_(nice_hostname)"
         if [ $status -eq 2 ]
             start_agent
         end