[gentoo-dev] [PATCH 02/11] ruby-ng.eclass: optimize: use pattern substitution

[Sam James <sam@gentoo.org>]

We can save a little bit (consistently a few ms) by using patsubs in some
obvious cases.

Not really any difference globally, but for sinatra:
```
$ pk pkg source $(pkg) --repo ~/g/ --bench 5s # before
dev-ruby/sinatra-3.0.5::/home/sam/g/: mean: 76.25ms, min: 59.23ms, max: 83.674ms, σ = 4.247ms, N = 66
dev-ruby/sinatra-3.0.5-r1::/home/sam/g/: mean: 77.465ms, min: 61.782ms, max: 85.127ms, σ = 3.592ms, N = 65
dev-ruby/sinatra-3.0.6::/home/sam/g/: mean: 80.192ms, min: 60.922ms, max: 84.951ms, σ = 3.899ms, N = 63
dev-ruby/sinatra-2.2.3::/home/sam/g/: mean: 80.389ms, min: 56.818ms, max: 86.915ms, σ = 4.508ms, N = 63

$ pk pkg source $(pkg) --repo ~/g/ --bench 5s # after
dev-ruby/sinatra-2.2.3::/home/sam/g/: mean: 66.68ms, min: 56.938ms, max: 74.248ms, σ = 4.832ms, N = 75
dev-ruby/sinatra-3.0.6::/home/sam/g/: mean: 73.618ms, min: 60.153ms, max: 77.978ms, σ = 3.195ms, N = 68
dev-ruby/sinatra-3.0.5::/home/sam/g/: mean: 72.069ms, min: 58.736ms, max: 78.223ms, σ = 3.277ms, N = 70
dev-ruby/sinatra-3.0.5-r1::/home/sam/g/: mean: 73.265ms, min: 60.738ms, max: 81.06ms, σ = 3.227ms, N = 69
```

Bug: https://bugs.gentoo.org/908465
Signed-off-by: Sam James <sam@gentoo.org>
---
 eclass/ruby-ng.eclass | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/eclass/ruby-ng.eclass b/eclass/ruby-ng.eclass
index 5a6edb1bf6080..2bf1885d38031 100644
--- a/eclass/ruby-ng.eclass
+++ b/eclass/ruby-ng.eclass
@@ -183,11 +183,11 @@ _ruby_wrap_conditions() {
 	local conditions="$1"
 	local atoms="$2"
 
-	for condition in $conditions; do
+	for condition in ${conditions}; do
 		atoms="${condition}? ( ${atoms} )"
 	done
 
-	echo "$atoms"
+	echo "${atoms}"
 }
 
 # @FUNCTION: ruby_add_rdepend
@@ -322,11 +322,9 @@ ruby_get_use_implementations() {
 ruby_get_use_targets() {
 	debug-print-function ${FUNCNAME} "${@}"
 
-	local t implementation
-	for implementation in $(_ruby_get_all_impls); do
-		t+=" ruby_targets_${implementation}"
-	done
-	echo $t
+
+	local impls="$(_ruby_get_all_impls)"
+	echo "${impls//ruby/ruby_targets_ruby}"
 }
 
 # @FUNCTION: ruby_implementations_depend
-- 
2.41.0