Optimize the fish_prompt function

darcs-hash:20060128102551-ac50b-58580c29fd9537e502bacaad7949433010b5a04b.gz

2 files changed, 20 insertions, 8 deletions

diff --git a/init/fish_function.fish b/init/fish_function.fish
index ab7133ec..89e9859d 100644
--- a/init/fish_function.fish
+++ b/init/fish_function.fish
@@ -180,17 +180,17 @@ function open -d "Open file in default application"
 end
 
 #
-# Print the current working directory. If it is too long, it will be
-# ellipsised. This function is used by the default prompt command.
+# Print the current working directory in a shortened form.This
+# function is used by the default prompt command.
 #
 
 function prompt_pwd -d "Print the current working directory, shortend to fit the prompt"
-	set -l wd (pwd)
-	set -l res (echo $wd|sed -e 's-/\([^/]\)\([^/]*\)-/\1-g')
-	if test $wd != '~'
-		set res $res(echo $wd|sed -e 's-.*/[^/]\([^/]*$\)-\1-')
+	if test "$PWD" != "$HOME"
+		printf "%s" (echo $PWD|sed -e "s|^$HOME|~|" -e 's-/\([^/]\)\([^/]*\)-/\1-g')
+		echo $PWD|sed -e 's-.*/[^/]\([^/]*$\)-\1-'
+	else
+		echo '~'
 	end
-	echo $res
 end
 
 #
diff --git a/init/fish_interactive.fish.in b/init/fish_interactive.fish.in
index 435fa5a1..8a38509c 100644
--- a/init/fish_interactive.fish.in
+++ b/init/fish_interactive.fish.in
@@ -26,7 +26,19 @@ end
 # long it is.
 
 function fish_prompt -d (_ "Write out the prompt")
-	printf '%s@%s %s%s%s> \n' (whoami) (hostname|cut -d . -f 1) (set_color $fish_color_cwd) (prompt_pwd) (set_color normal)
+	if not set -q __fish_prompt_whoami
+		set -g __fish_prompt_whoami (whoami)
+	end
+	
+	if not set -q __fish_prompt_hostname
+		set -g __fish_prompt_hostname (hostname|cut -d . -f 1)
+	end
+	
+	if not set -q __fish_prompt_normal
+		set -g __fish_prompt_normal (set_color normal)
+	end
+	
+	printf '%s@%s %s%s%s> \n' $__fish_prompt_whoami $__fish_prompt_hostname (set_color $fish_color_cwd) (prompt_pwd) $__fish_prompt_normal
 end
 
 #