misc/bash, misc/zsh: fix completion rules

This patch includes fixes pointed out in CL 52140043, which was
originally written by john.gosset.

LGTM=minux.ma
R=golang-codereviews, minux.ma
CC=golang-codereviews
https://golang.org/cl/80320043

misc/bash/go

@@ -22,8 +22,7 @@ _go()
 
   local cmds="build clean env fix fmt get
     install list run test tool version vet"
-  local addhelp="gopath importpath remote
-    testflag testfunc"
+  local addhelp="c gopath importpath packages testflag testfunc"
   local other="help"
 
   if [ "$COMP_CWORD" == 1 ]; then
@@ -185,15 +184,9 @@ _go()
           'dist') # TODO: Implement something.
             #_go_tool_dist
             ;;
-          'ebnflint') # TODO: Implement something.
-            #_go_tool_ebnflint
-            ;;
           'fix') # TODO: Implement something.
             #_go_tool_fix
             ;;
-          'gotype') # TODO: Implement something.
-            #_go_tool_gotype
-            ;;
           'nm') # TODO: Implement something.
             #_go_tool_nm
             ;;
@@ -203,9 +196,6 @@ _go()
           'pprof') # TODO: Implement something.
             #_go_tool_pprof
             ;;
-          'prof') # TODO: Implement something.
-            #_go_tool_prof
-            ;;
           'vet') # TODO: Implement something.
             #_go_tool_vet
             ;;

misc/zsh/go

@@ -19,7 +19,6 @@ __go_tool_complete() {
   commands+=(
     'build[compile packages and dependencies]'
     'clean[remove object files]'
-    'doc[run godoc on package sources]'
     'env[print Go environment information]'
     'fix[run go tool fix on packages]'
     'fmt[run gofmt on package sources]'
@@ -92,6 +91,7 @@ __go_tool_complete() {
         "-short[use short mode]" \
         "-parallel[number of parallel tests]:number" \
         "-cpu[values of GOMAXPROCS to use]:number list" \
+	"-cover[enable coverage analysis]" \
         "-run[run tests and examples matching regexp]:regexp" \
         "-bench[run benchmarks matching regexp]:regexp" \
         "-benchmem[print memory allocation stats]" \
@@ -106,9 +106,10 @@ __go_tool_complete() {
       ;;
   help)
       _values "${commands[@]}" \
+        'c[how to call C code]' \
+        'importpath[description of import path]' \
         'gopath[GOPATH environment variable]' \
         'packages[description of package lists]' \
-        'remote[remote import path syntax]' \
         'testflag[description of testing flags]' \
         'testfunc[description of testing functions]'
       ;;