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Date: Mon, 17 Apr 2000 16:45:53 +0200 (MET DST)
Message-Id: <200004171445.QAA16702@beta.informatik.hu-berlin.de>
From: Sven Wischnowsky <wischnow@informatik.hu-berlin.de>
To: zsh-workers@sunsite.auc.dk
In-reply-to: "Bart Schaefer"'s message of Fri, 14 Apr 2000 14:57:41 +0000
Subject: PATCH: zstyle+ (was: Re: List of unresolved issues)


Bart Schaefer wrote:

> ... [ that function to make defining styles easier ]
> 
> No problem.  Name it something else, alias it back to zstyle, and make
> sure the completion autoloads use -U.
> 
> ...
> 
> Is "zstyle+" bad because it would mean a file with a '+' in it's name?

This adds Functions/Misc/zstyle+ (noone objected to that name).

Bye
 Sven

--- /dev/null	Mon Apr 17 16:43:47 2000
+++ Functions/Misc/zstyle+	Mon Apr 17 16:42:27 2000
@@ -0,0 +1,35 @@
+# This makes defining styles a bit simpler by using a single `+' as a
+# special token that allows to append a context name to the previously
+# used context name. Like this:
+#
+#   zstyle+ ':foo:bar' style1 value1 \
+#         + ':baz'     style2 value2 \
+#         + ':frob'    style3 value3
+#
+# This defines style1 with value1 for the context :foo:bar as usual.
+# But it also defines styles2 with value2 for the context :foo:bar:baz
+# and style3 with value3 for :foo:bar:frob.
+# Of course, any of the sub-contexts after the plus signs may be 
+# empty strings to re-use the previous context unchanged.
+#
+# If you don't want to change all your calls to `zstyle' to use
+# `zstyle+' you can use an alias `alias zstyle=zstyle+' and make sure
+# the completion functions are autoloaded without alias expansion (the
+# -U option to the autoload builtin). The completion system normally
+# loads its functions with without alias expansion.
+
+case "$1" in
+-*) zstyle "$@";;
+
+*)  setopt localoptions noksharrays
+    integer i
+    local context="$1"
+    1=''
+    for ((i=2; $#; ++i)); do
+      if [[ $i -gt $# || "$argv[i]" == '+' ]]; then
+        zstyle "$context${(@)argv[1,i-1]}"
+        shift "i > $# ? $# : i"  # Stupid shift error on i > $#
+  	i=1
+      fi
+    done;;
+esac

--
Sven Wischnowsky                         wischnow@informatik.hu-berlin.de