[PATCH] Add xxd completion

[Daniel Shahaf <d.s@daniel.shahaf.name>]

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Attached completion for xxd (a hex dump utility from Vim).  It works,
but I haven't written completion functions before so I might have
overlooked something.

Cheers,

Daniel

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>From 104556bea66766b73f0b7b0812973c6da300670a Mon Sep 17 00:00:00 2001
From: Daniel Shahaf <d.s@daniel.shahaf.name>
Date: Wed, 9 Jul 2014 16:23:53 +0000
Subject: [PATCH] Add xxd completion

---
 Completion/Unix/Command/_xxd |   48 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Completion/Unix/Command/_xxd

diff --git a/Completion/Unix/Command/_xxd b/Completion/Unix/Command/_xxd
new file mode 100644
index 0000000..62cf628
--- /dev/null
+++ b/Completion/Unix/Command/_xxd
@@ -0,0 +1,48 @@
+#compdef xxd
+
+local curcontext="$curcontext" ret=1 arguments
+
+# TODO: permit two hyphens (--autoskip, --groupsize, etc)
+# TODO: xxd -<tab> should show '-x' and '-x:' differently - give visual hint that there's a required argument
+
+# Output options compatibility matrix
+# 
+# 0 - options conflict
+# 1 - options coexist
+#
+# (The matrix is symmetric, so implied values are not shown.)
+#
+#     bEipru
+#    bx10000
+#    E-x0001
+#    i--x001
+#    p---x11
+#    r----x0
+#    u-----x
+
+
+arguments=(
+    # output options
+    '(-b -bits            -i -include -p -postscript -plain -ps -r -reverse -u -uppercase)'{-b,-bits}'[output in binary digits, rather than hex]'
+    '(         -E -EBCDIC -i -include -p -postscript -plain -ps -r -reverse              )'{-E,-EBCDIC}'[print human-readable part in EBCDIC rather than ASCII]'
+    '(-b -bits -E -EBCDIC -i -include -p -postscript -plain -ps -r -reverse              )'{-i,-include}'[output in C include file style]'
+    '(-b -bits -E -EBCDIC -i -include -p -postscript -plain -ps                          )'{-p,-postscript,-plain,-ps}'[read or write a plain hexdump (no line numbers or ASCII rendering)]'
+
+    '(-b -bits -E -EBCDIC -i -include                           -r -reverse -u -uppercase)'{-r,-reverse}'[reverse mode\: read a hex dump and output binary data]'
+    '(-b -bits                                                  -r -reverse -u -uppercase)'{-u,-uppercase}'[output upper-case hex digits]'
+   
+    {-h,-help}'[display usage message]'
+    {-v,-version}'[show program version]'
+    '*'{-a,-autoskip}"[a single '*' replaces runs of NUL (toggleable)]"
+   
+    {-c+,-cols}'[output ARG octets per line]:number of octets per line'
+    {-g+,-groupsize}'[separate the output every ARG octets]:number of octets per group'
+    {-l+,-len}'[output ARG octets]:number of octets to output'
+    {-s,-skip,-seek}'[add ARG to file positions in the input]:file offset (absolute or relative)'
+   
+    ':files:_files'
+)
+
+_arguments -S $arguments && ret=0
+
+return ret
-- 
1.7.10.4