Added completions for cat, cp, mktemp, stat, touch for OS X.

share/completions/cat.fish

@@ -1,3 +1,4 @@
+if cat --version ^ /dev/null # GNU
 	complete -c cat -s A -l show-all --description "Escape all non-printing characters"
 	complete -c cat -s b -l number-nonblank --description "Number nonblank lines"
 	complete -c cat -s e --description "Escape non-printing characters except tab"
@@ -9,4 +10,12 @@ complete -c cat -s T -l show-tabs --description "Escape tab"
 	complete -c cat -s v --description "Escape non-printing except newline and tab"
 	complete -c cat -l help --description "Display help and exit"
 	complete -c cat -l version --description "Display version and exit"
-
+else # OS X
+	complete -c cat -s b -d "Number non-blank lines"
+	complete -c cat -s e -d "Display non-printing characters, and `\$' at the end of each line"
+	complete -c cat -s n -d "Number all lines"
+	complete -c cat -s s -d "Single spaced output by squeezing adjacent empty lines"
+	complete -c cat -s t -d "Display non-printing characters, and tab characters as `^I'"
+	complete -c cat -s u -d "Disable output buffering"
+	complete -c cat -s v -d "Display non-printing characters so they're visible."
+end

share/completions/cp.fish

@@ -1,4 +1,4 @@
-
+if cp --version ^ /dev/null # GNU
 	complete -c cp -s a -l archive --description "Same as -dpR"
 	complete -c cp -s b -l backup --description "Make backup of each existing destination file" -a "none off numbered t existing nil simple never"
 	complete -c cp -l copy-contents --description "Copy contents of special files when recursive"
@@ -27,3 +27,16 @@ complete -c cp -s s -l symbolic-link --description "Make symbolic links instead
 	complete -c cp -s T -l no-target-directory --description "Treat DEST as a normal file"
 	complete -c cp -s x -l one-file-system --description "Stay on this file system"
 	complete -c cp -s X -l context -r --description "Set security context of copy to CONTEXT"
+else # OS X
+	complete -c cp -s a --description "Preserve structure and attributes of files but not directory structure. (-pPR)"
+	complete -c cp -s f -d "Replace destination file without confirmation"
+	complete -c cp -s H -d "Follow symlinks on command-link"
+	complete -c cp -s i -d "Prompt before overwrite"
+	complete -c cp -s L -d "Follow all symlinks"
+	complete -c cp -s n -d "Do overwrite existing files"
+	complete -c cp -s P -d "Don't follow symlinks (default)"
+	complete -c cp -s p -d "Preserve attributes of source file"
+	complete -c cp -s R -d "Copy directories recursively"
+	complete -c cp -s v -d "Verbos output"
+	complete -c cp -s X -d "Do not copy Extended Attributes (EAs) of resource forks"
+end

share/completions/mktemp.fish

@@ -1,3 +1,4 @@
+if mktemp --version >/dev/null ^/dev/null # GNU
 	complete -c mktemp -s d -l directory    -d 'create a directory, not a file'
 	complete -c mktemp -s u -l dry-run      -d 'do not create anything; merely print a name (unsafe)'
 	complete -c mktemp -s q -l quiet        -d 'suppress diagnostics about file/dir-creation failure'
@@ -5,3 +6,9 @@ complete -c mktemp -l suffix -r          -d 'append SUFF to TEMPLATE'
 	complete -c mktemp -l tmpdir            -d 'interpret TEMPLATE relative to DIR'
 	complete -c mktemp -l help              -d 'display this help and exit'
 	complete -c mktemp -l version           -d 'output version information and exit'
+else # OS X
+	complete -c mktemp -s d                 -d 'create a directory, not a file'
+	complete -c mktemp -s q                 -d 'suppress diagnostics about file/dir-creation failure'
+	complete -c mktemp -s t -r              -d 'generate a template using PREFIX and TMPDIR (if set)'
+	complete -c mktemp -s u                 -d 'file will be unliked before mktemp exits (unsafe)'
+end

share/completions/stat.fish

@@ -1,3 +1,4 @@
+if stat --version ^ /dev/null # GNU
 	complete -c stat -s L -l dereference     -d 'follow links'
 	complete -c stat -s f -l file-system     -d 'display file system status instead of file status'
 	complete -c stat -s c -l format -x       -d 'use the specified FORMAT instead of the default; output a newline after each use of FORMAT'
@@ -5,3 +6,15 @@ complete -c stat -l printf -x            -d 'like --format, but interpret backsl
 	complete -c stat -s t -l terse           -d 'print the information in terse form'
 	complete -c stat -l help     -d 'display this help and exit'
 	complete -c stat -l version  -d 'output version information and exit'
+else # OS X
+	complete -c stat -s F -d "Display content type symbols similar to ls(1)"
+	complete -c stat -s f -d "Display information using specified FORMAT" -r
+	complete -c stat -s L -d "Use stat(2) instead of lsstat(2)"
+	complete -c stat -s l -d "Display output in ls -lT format"
+	complete -c stat -s n -d "Don't force a newline to appear at end of each piece of output"
+	complete -c stat -s q -d "Supress failure messages"
+	complete -c stat -s r -d "Display raw information"
+	complete -c stat -s s -d "Display informationin ``shell output'' suitable for initialising variables"
+	complete -c stat -s t -d "Display timestamps using specified FORMAT" -r
+	complete -c stat -s x -d "Verbose information, similar to some Linux distributions"
+end

share/completions/touch.fish

@@ -1,3 +1,4 @@
+if touch --version ^ /dev/null # GNU
 	complete -c touch -s a --description "Change access time"
 	complete -c touch -s B -l backward -x --description "Set date back"
 	complete -c touch -s c -l no-create --description "Do not create file"
@@ -9,3 +10,13 @@ complete -c touch -s t --description "Set date"
 	complete -c touch -l time -x --description "Set time"
 	complete -c touch -l help --description "Display help and exit"
 	complete -c touch -l version --description "Display version and exit"
+else # OS X
+	complete -c touch -s A -d "Adjust access and modification time stamps by specified VALUE" -r
+	complete -c touch -s a -d "Change access time of file"
+	complete -c touch -s c -d "Don't create file if it doesn't exist"
+	complete -c touch -s f -d "Attempt to force the update, even when permission don't permit"
+	complete -c touch -s h -d "Change times of the symlink ranther than the file. Implies `-c'"
+	complete -c touch -s m -d "Change modification time of file"
+	complete -c touch -s r -d "Use access and modifications times from specified file rather than current time of day"
+	complete -c touch -s t -d "Change access and modifications times to specified file rather than current time of day"
+end