Add completions for openocd

CHANGELOG.md

@@ -109,6 +109,7 @@ fish 3.0 is a major release which brings with it both improvements in functional
   - `kldunload`
   - `meson`
   - `ngrok` (#4642)
+  - `openocd`
   - `optipng`
   - `opkg` (#5168)
   - `pandoc` (#2937)

share/completions/openocd.fish

@@ -0,0 +1,27 @@
+# openocd is a utility for programming microcontrollers, especially popular with
+# developers targeting ARM devices. It has a number of pre-installed configuration
+# scripts to control its connection behavior which are in its installation directory
+# and may be specified at the command line via relative paths as if you were cd'd
+# into that directory.
+
+# Retrieve the likely compile-time PREFIX for openocd based off of where the binary
+# is located. e.g. if openocd is /usr/local/bin/openocd return /usr/local
+function __fish_openocd_prefix
+	string replace "/bin/openocd" "" (which openocd)
+end
+
+# The results of this function are as if __fish_complete_suffix were called
+# while cd'd into the openocd scripts directory
+function __fish_complete_openocd_path
+	__fish_complete_suffix (commandline -ct) "$argv[1]" "$argv[2]" (__fish_openocd_prefix)/share/openocd/scripts
+end
+
+complete -c openocd -f # at no point does openocd take arbitrary arguments
+complete -c openocd -s h -l help -d "display help"
+complete -c openocd -s v -l version -d "display version info"
+complete -c openocd -s f -l file -xa '(__fish_complete_openocd_path .cfg)'
+complete -c openocd -s d -l debug -d "run under debug level 3"
+complete -c openocd -s d -l debug -d "run under debug level n" -xa '(seq 1 9)'
+complete -c openocd -s l -l log_output -d "redirect output to file" -r
+complete -c openocd -s c -l command -d "run command"
+complete -c openocd -s s -l search -d "search path for config files and scripts" -xa '(__fish_complete_directories)'