Patch CLDR Plurals

See https://savannah.gnu.org/bugs/?66378

.github/workflows/build.yml

@@ -229,6 +229,11 @@ jobs:
           unzip -p src/downloads/cldr-$CLDR_VERSION.zip LICENSE > installed/license-cldr.txt
           mkdir -p installed/lib/gettext/common/supplemental
           unzip -p src/downloads/cldr-$CLDR_VERSION.zip common/supplemental/plurals.xml >installed/lib/gettext/common/supplemental/plurals.xml
+      -
+        name: Simplify CLDR plurals.xml
+        if: steps.vars.outputs.simplify-plurals-xml
+        shell: pwsh
+        run: ./build-exe/simplify-plurals-xml.ps1 installed/lib/gettext/common/supplemental/plurals.xml
       -
         name: Extract iconv
         run: |

build-exe/simplify-plurals-xml.ps1

@@ -0,0 +1,33 @@
+# Script that simplify the CLDR plural.xml so that it's parsable by cldr-plurals (see https://savannah.gnu.org/bugs/?66378)
+
+param (
+    [Parameter(Mandatory = $true)]
+    [ValidateLength(1, [int]::MaxValue)]
+    [ValidateScript({Test-Path -LiteralPath $_ -PathType Leaf})]
+    [string] $InputPath,
+    [Parameter(Mandatory = $false)]
+    [string] $OutputPath
+)
+
+$xml = Get-Content -LiteralPath $InputPath -Raw -Encoding utf8NoBOM
+
+# for gettext we can assume that c (compact decimal exponent value) and e (a deprecated synonym for 'c')
+# are always 0.
+# since (as of version 0.23) gettext doesn't recognize c and e, we replace them with v (assumed to be 0 by gettext)
+while ($true) {
+    $xml2 = $xml -creplace '(?<before>>[^"]*)\b[ce]\b','${before}v'
+    if ($xml2 -eq $xml) {
+        break
+    }
+    $xml = $xml2
+}
+# Strip examples like 1c3, 1.1c6
+$xml = $xml -creplace '\b\d+(\.\d*)?c\d+,\s*',''
+# Strip emppy examples (@decimal \u{2026})
+$xml = $xml -replace "@\w+\s+`u{2026}\s*",''
+
+if (-not($OutputPath)) {
+    $OutputPath = $InputPath
+}
+
+Set-Content -LiteralPath $OutputPath -Value $xml -NoNewLine -Encoding utf8NoBOM

build-exe/vars.ps1

@@ -435,6 +435,7 @@ Export-Variable -Name 'gettext-peversion-libtextstyle' -Value $gettextPEVersionL
 Export-Variable -Name 'iconv-tp-version' -Value $iconvTPVersion
 Export-Variable -Name 'gettext-tp-version' -Value $gettextTPVersion
 Export-Variable -Name 'cldr-plural-works' -Value $cldrPluralWorks
+Export-Variable -Name 'simplify-plurals-xml' -Value ($gettextVersion -le [Version]'0.23.0' ? 'true' : '')
 
 Write-Output '## Outputs'
 Get-Content -LiteralPath $env:GITHUB_OUTPUT