Temporarily disable PCX format (#2379)

* Remove references to PCX from Cargo.toml

* Suppress warnings about nonexistent feature

* Remove references to PCX from documentation

* Drop PCX from CI feature matrix

Author: Shnatsel

.github/workflows/rust.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        features: ['', default, rayon, avif, bmp, dds, exr, ff, gif, hdr, ico, jpeg, pcx, png, pnm, qoi, tga, tiff, webp]
+        features: ['', default, rayon, avif, bmp, dds, exr, ff, gif, hdr, ico, jpeg, png, pnm, qoi, tga, tiff, webp]
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable

Cargo.toml

@@ -46,7 +46,6 @@ exr = { version = "1.5.0", optional = true }
 gif = { version = "0.13", optional = true }
 image-webp = { version = "0.2.0", optional = true }
 mp4parse = { version = "0.17.0", optional = true }
-pcx = { version = "0.2.3", optional = true }
 png = { version = "0.17.6", optional = true }
 qoi = { version = "0.4", optional = true }
 ravif = { version = "0.11.11", default-features = false, optional = true }
@@ -78,7 +77,6 @@ gif = ["dep:gif", "dep:color_quant"]
 hdr = []
 ico = ["bmp", "png"]
 jpeg = ["dep:zune-core", "dep:zune-jpeg"]
-pcx = ["dep:pcx"] # Note that the PCX dependency uses the WTFPL license
 png = ["dep:png"]
 pnm = []
 qoi = ["dep:qoi"]

README.md

@@ -53,7 +53,6 @@ image format encoders and decoders.
 | ICO      | Yes                                       | Yes                                     |
 | JPEG     | Yes                                       | Yes                                     |
 | EXR      | Yes                                       | Yes                                     |
-| PCX      | Yes                                       | ---                                     |
 | PNG      | Yes                                       | Yes                                     |
 | PNM      | Yes                                       | Yes                                     |
 | QOI      | Yes                                       | Yes                                     |

src/lib.rs

@@ -118,6 +118,14 @@
 #![deny(missing_copy_implementations)]
 #![cfg_attr(all(test, feature = "benchmarks"), feature(test))]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
+// We've temporarily disabled PCX support for 0.25.5 release
+// by removing the corresponding feature.
+// We want to ship bug fixes without committing to PCX support.
+//
+// Cargo shows warnings about code depending on a nonexistent feature
+// even to people using the crate as a dependency,
+// so we have to suppress those warnings.
+#![allow(unexpected_cfgs)]
 
 #[cfg(all(test, feature = "benchmarks"))]
 extern crate test;
@@ -214,7 +222,6 @@ pub mod flat;
 /// | ICO      | Yes                                       | Yes                                     |
 /// | JPEG     | Yes                                       | Yes                                     |
 /// | EXR      | Yes                                       | Yes                                     |
-/// | PCX      | Yes                                       | ---                                     |
 /// | PNG      | Yes                                       | Yes                                     |
 /// | PNM      | Yes                                       | Yes                                     |
 /// | QOI      | Yes                                       | Yes                                     |