git-codereview: use cmd prefix on command implementation funcs

The name space is getting a bit crowded.
These words are too easy to use for other variables or functions.

Change-Id: Iedbccb82f85627fe422a029a6b45ad39a2e18dd0
Reviewed-on: https://go-review.googlesource.com/3627
Reviewed-by: Rob Pike <r@golang.org>
diff --git a/git-codereview/branch.go b/git-codereview/branch.go
index 38933b0..cabe7f6 100644
--- a/git-codereview/branch.go
+++ b/git-codereview/branch.go
@@ -347,12 +347,12 @@
 	return work[0]
 }
 
-func branchpoint(args []string) {
+func cmdBranchpoint(args []string) {
 	expectZeroArgs(args, "sync")
 	fmt.Fprintf(stdout(), "%s\n", CurrentBranch().Branchpoint())
 }
 
-func rebasework(args []string) {
+func cmdRebaseWork(args []string) {
 	expectZeroArgs(args, "rebase-work")
 	b := CurrentBranch()
 	if HasStagedChanges() || HasUnstagedChanges() {
diff --git a/git-codereview/change.go b/git-codereview/change.go
index ae761cf..b5bcaa2 100644
--- a/git-codereview/change.go
+++ b/git-codereview/change.go
@@ -14,7 +14,7 @@
 var changeAuto bool
 var changeQuick bool
 
-func change(args []string) {
+func cmdChange(args []string) {
 	flags.BoolVar(&changeAuto, "a", false, "add changes to any tracked files")
 	flags.BoolVar(&changeQuick, "q", false, "do not edit pending commit msg")
 	flags.Parse(args)
diff --git a/git-codereview/gofmt.go b/git-codereview/gofmt.go
index 4608a3a..5c3780e 100644
--- a/git-codereview/gofmt.go
+++ b/git-codereview/gofmt.go
@@ -17,7 +17,7 @@
 
 var gofmtList bool
 
-func gofmt(args []string) {
+func cmdGofmt(args []string) {
 	flags.BoolVar(&gofmtList, "l", false, "list files that need to be formatted")
 	flags.Parse(args)
 	if len(flag.Args()) > 0 {
diff --git a/git-codereview/hook.go b/git-codereview/hook.go
index ae6a6cd..63163d6 100644
--- a/git-codereview/hook.go
+++ b/git-codereview/hook.go
@@ -97,7 +97,7 @@
 exec git-review hook-invoke %s "$@"
 `
 
-func hookInvoke(args []string) {
+func cmdHookInvoke(args []string) {
 	if len(args) == 0 {
 		dief("usage: git-codereview hook-invoke <hook-name> [args...]")
 	}
diff --git a/git-codereview/mail.go b/git-codereview/mail.go
index a68cdea..3eabd47 100644
--- a/git-codereview/mail.go
+++ b/git-codereview/mail.go
@@ -12,7 +12,7 @@
 	"strings"
 )
 
-func mail(args []string) {
+func cmdMail(args []string) {
 	var (
 		diff   = flags.Bool("diff", false, "show change commit diff and don't upload or mail")
 		force  = flags.Bool("f", false, "mail even if there are staged changes")
diff --git a/git-codereview/pending.go b/git-codereview/pending.go
index 3239d23..deda834 100644
--- a/git-codereview/pending.go
+++ b/git-codereview/pending.go
@@ -52,7 +52,7 @@
 	}
 }
 
-func pending(args []string) {
+func cmdPending(args []string) {
 	flags.BoolVar(&pendingCurrentOnly, "c", false, "show only current branch")
 	flags.BoolVar(&pendingLocal, "l", false, "use only local information - no network operations")
 	flags.BoolVar(&pendingShort, "s", false, "show short listing")
diff --git a/git-codereview/review.go b/git-codereview/review.go
index 144f911..bc13a41 100644
--- a/git-codereview/review.go
+++ b/git-codereview/review.go
@@ -127,25 +127,25 @@
 
 	switch command {
 	case "branchpoint":
-		branchpoint(args)
+		cmdBranchpoint(args)
 	case "change":
-		change(args)
+		cmdChange(args)
 	case "gofmt":
-		gofmt(args)
+		cmdGofmt(args)
 	case "hook-invoke":
-		hookInvoke(args)
+		cmdHookInvoke(args)
 	case "hooks":
 		// done - installHook already ran
 	case "mail", "m":
-		mail(args)
+		cmdMail(args)
 	case "pending":
-		pending(args)
+		cmdPending(args)
 	case "rebase-work":
-		rebasework(args)
+		cmdRebasework(args)
 	case "submit":
-		submit(args)
+		cmdSubmit(args)
 	case "sync":
-		doSync(args)
+		cmdSync(args)
 	case "test-loadAuth": // for testing only
 		loadAuth()
 	default:
diff --git a/git-codereview/submit.go b/git-codereview/submit.go
index a50b214..8528641 100644
--- a/git-codereview/submit.go
+++ b/git-codereview/submit.go
@@ -12,7 +12,7 @@
 
 // TODO(rsc): Add -tbr, along with standard exceptions (doc/go1.5.txt)
 
-func submit(args []string) {
+func cmdSubmit(args []string) {
 	flags.Usage = func() {
 		fmt.Fprintf(stderr(), "Usage: %s submit %s [commit-hash]\n", os.Args[0], globalFlags)
 	}
diff --git a/git-codereview/sync.go b/git-codereview/sync.go
index 652b0bf..59611ac 100644
--- a/git-codereview/sync.go
+++ b/git-codereview/sync.go
@@ -6,7 +6,7 @@
 
 import "strings"
 
-func doSync(args []string) {
+func cmdSync(args []string) {
 	expectZeroArgs(args, "sync")
 
 	// Get current branch and commit ID for fixup after pull.