silence optipng messages by default per CRAN request

yihui · yihui · commit 23ffaabda5c3 · 2025-04-02T17:16:34.000-05:00
diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,6 @@
 # CHANGES IN knitr VERSION 1.51
 
+- `hook_optipng()` now uses the `-quiet` argument of `optipng` to suppress the messages by default.
 
 # CHANGES IN knitr VERSION 1.50
 
diff --git a/R/hooks-extra.R b/R/hooks-extra.R
@@ -80,7 +80,7 @@ hook_png = function(
   opts = options[[cmd]]
   if (isFALSE(opts)) return()
   if (is.null(opts) || isTRUE(opts)) opts = switch(
-    cmd, pngquant = '--skip-if-larger', mogrify = '-trim'
+    cmd, optipng = '-quiet', pngquant = '--skip-if-larger', mogrify = '-trim'
   )
   if (cmd == 'pngquant') opts = c(opts, '--ext', '-fs8.png')
 

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,6 @@`
`1`	`1`	`# CHANGES IN knitr VERSION 1.51`
`2`	`2`
	`3`	+- `hook_optipng()` now uses the `-quiet` argument of `optipng` to suppress the messages by default.
`3`	`4`
`4`	`5`	`# CHANGES IN knitr VERSION 1.50`
`5`	`6`
Original file line number	Diff line number	Diff line change
`@@ -80,7 +80,7 @@ hook_png = function(`
`80`	`80`	`opts = options[[cmd]]`
`81`	`81`	`if (isFALSE(opts)) return()`
`82`	`82`	`if (is.null(opts) \|\| isTRUE(opts)) opts = switch(`
`83`		`- cmd, pngquant = '--skip-if-larger', mogrify = '-trim'`
	`83`	`+ cmd, optipng = '-quiet', pngquant = '--skip-if-larger', mogrify = '-trim'`
`84`	`84`	`)`
`85`	`85`	`if (cmd == 'pngquant') opts = c(opts, '--ext', '-fs8.png')`
`86`	`86`