Make cksum silent

so it behaves similar to `cmp -s`, which is what we had before.

CHANGELOG.md

@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-_No unreleased changes._
+### Fixed
+- "No such file or directory" displayed when building a new file. This was a
+  regression introduced after replacing `cmp` by `cksum`.
 
 ## [1.2.0] - 2020-05-17
 

src/stage2/28_zimfw_mv.zsh.erb

@@ -1,6 +1,7 @@
 _zimfw_mv() {
-  local -a cklines=(${(f)"$(command cksum ${@})"})
-  if [[ ${${(z)cklines[1]}[1,2]} == ${${(z)cklines[2]}[1,2]} ]]; then
+  local -a cklines
+  if cklines=(${(f)"$(command cksum ${1} ${2} 2>/dev/null)"}) && \
+      [[ ${${(z)cklines[1]}[1,2]} == ${${(z)cklines[2]}[1,2]} ]]; then
     _zimfw_print -PR "<%= okay %>%B${2}:%b Already up to date"
   else
     if [[ -e ${2} ]]; then

src/zimfw.zsh.erb

@@ -6,7 +6,7 @@ class Zim
     @home = "${ZDOTDIR:-${HOME}}"
     @min_zsh_version = "5.2"
     @startup_files_glob = ".z(shenv|profile|shrc|login|logout)"
-    @version = "1.2.0"
+    @version = "1.2.1-SNAPSHOT"
     @ellipsis = " ..."
     @okay = "%F{green})%f "
     @error = "x "

zimfw.zsh

@@ -37,8 +37,9 @@ _zimfw_print() {
 }
 
 _zimfw_mv() {
-  local -a cklines=(${(f)"$(command cksum ${@})"})
-  if [[ ${${(z)cklines[1]}[1,2]} == ${${(z)cklines[2]}[1,2]} ]]; then
+  local -a cklines
+  if cklines=(${(f)"$(command cksum ${1} ${2} 2>/dev/null)"}) && \
+      [[ ${${(z)cklines[1]}[1,2]} == ${${(z)cklines[2]}[1,2]} ]]; then
     _zimfw_print -PR "%F{green})%f %B${2}:%b Already up to date"
   else
     if [[ -e ${2} ]]; then
@@ -295,7 +296,7 @@ _zimfw_compile() {
 }
 
 _zimfw_info() {
-  print -R 'zimfw version: '${_zversion}' (previous commit is 8724686)'
+  print -R 'zimfw version: '${_zversion}' (previous commit is 853e5a7)'
   print -R 'ZIM_HOME:      '${ZIM_HOME}
   print -R 'Zsh version:   '${ZSH_VERSION}
   print -R 'System info:   '$(command uname -a)
@@ -339,7 +340,7 @@ _zimfw_upgrade() {
 }
 
 zimfw() {
-  local -r _zversion='1.2.0'
+  local -r _zversion='1.2.1-SNAPSHOT'
   local -r zusage="Usage: %B${0}%b <action> [%B-q%b|%B-v%b]
 
 Actions: