chore: Update the .editorconfig files and pacify editorconfig-checker

15 files changed, 166 insertions, 108 deletions

diff --git a/.editorconfig b/.editorconfig
index 34a145d4c..324bdf7d5 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -10,29 +10,44 @@ trim_trailing_whitespace = true
 # Traditionally, the end-of-line character has been platform-specific.
 end_of_line = unset
 
+[*.txt]
+indent_style = space
+
 [*.[chS]]
 indent_style = space
+max_doc_length = 80
 max_line_length = 81
+# FIXME: max_line_length should be 80
 
-[*.{awk,cmake,dfa,in,sh}]
+[*.dfa]
 indent_style = space
+max_doc_length = 80
+max_line_length = 80
+
+[*.{awk,cmake}]
+indent_style = space
+max_doc_length = 80
 max_line_length = 100
 
-[*.txt]
+[*.{in,sh}]
 indent_style = space
-max_line_length = unset
+max_doc_length = 100
+max_line_length = 100
 
 [{Makefile.in,ltmain.sh}]
 indent_style = unset
 insert_final_newline = unset
+max_doc_length = unset
 max_line_length = unset
 trim_trailing_whitespace = unset
 
 [*~]
+end_of_line = unset
 indent_style = unset
 insert_final_newline = unset
-max_line_length = unset
 trim_trailing_whitespace = unset
 
 [COMMIT_EDITMSG]
+indent_style = space
+max_doc_length = unset
 max_line_length = 72
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9cf62ba83..8bff18ff6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -265,7 +265,7 @@ if(TARGET_ARCH MATCHES "^(loongarch)")
     if(COMPILER_SUPPORTS_LSX)
       set(libpng_loongarch_sources
           loongarch/loongarch_lsx_init.c
-	  loongarch/filter_lsx_intrinsics.c)
+          loongarch/filter_lsx_intrinsics.c)
       set_source_files_properties(${libpng_loongarch_sources}
                                   PROPERTIES
                                   COMPILE_FLAGS "-mlsx")
@@ -302,7 +302,7 @@ endif()
 
 # Set definitions and sources for LoongArch.
 if(TARGET_ARCH MATCHES "^(loongarch)")
-	add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
+  add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
 endif()
 
 endif(PNG_HARDWARE_OPTIMIZATIONS)
diff --git a/contrib/.editorconfig b/contrib/.editorconfig
index bd9b590d3..e1b551df7 100644
--- a/contrib/.editorconfig
+++ b/contrib/.editorconfig
@@ -2,12 +2,6 @@
 
 root = false
 
-[*]
-charset = unset
-end_of_line = unset
-indent_size = unset
-indent_style = unset
-insert_final_newline = unset
+[*.[ch]]
 max_doc_length = unset
 max_line_length = unset
-trim_trailing_whitespace = unset
diff --git a/contrib/examples/iccfrompng.c b/contrib/examples/iccfrompng.c
index 00056abfd..0f86714a8 100644
--- a/contrib/examples/iccfrompng.c
+++ b/contrib/examples/iccfrompng.c
@@ -80,7 +80,7 @@ extract(FILE *fp, png_uint_32 *proflen)
       }
 
       else
-	result = no_profile;
+         result = no_profile;
    }
 
    png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
@@ -155,7 +155,7 @@ extract_one_file(const char *filename)
       }
 
       else if (verbose && profile == no_profile)
-	printf("%s has no profile\n", filename);
+         printf("%s has no profile\n", filename);
    }
 
    else
diff --git a/contrib/gregbook/rpng-x.c b/contrib/gregbook/rpng-x.c
index 92effaa6d..2fc9272c6 100644
--- a/contrib/gregbook/rpng-x.c
+++ b/contrib/gregbook/rpng-x.c
@@ -21,7 +21,7 @@
     - 1.10:  added support for non-default visuals; fixed X pixel-conversion
     - 1.11:  added extra set of parentheses to png_jmpbuf() macro; fixed
               command-line parsing bug
-    - 1.12:  fixed some small X memory leaks (thanks to François Petitjean)
+    - 1.12:  fixed some small X memory leaks (thanks to François Petitjean)
     - 1.13:  fixed XFreeGC() crash bug (thanks to Patrick Welche)
     - 1.14:  added support for X resources (thanks to Gerhard Niklasch)
     - 2.00:  dual-licensed (added GNU GPL)
diff --git a/contrib/gregbook/rpng2-x.c b/contrib/gregbook/rpng2-x.c
index af944c0f2..1375dc9a6 100644
--- a/contrib/gregbook/rpng2-x.c
+++ b/contrib/gregbook/rpng2-x.c
@@ -27,7 +27,7 @@
     - 1.11:  added -usleep option for demos; fixed command-line parsing bug
     - 1.12:  added -pause option for demos and testing
     - 1.20:  added runtime MMX-enabling/disabling and new -mmx* options
-    - 1.21:  fixed some small X memory leaks (thanks to François Petitjean)
+    - 1.21:  fixed some small X memory leaks (thanks to François Petitjean)
     - 1.22:  fixed XFreeGC() crash bug (thanks to Patrick Welche)
     - 1.23:  added -bgpat 0 mode (std white/gray checkerboard, 8x8 squares)
     - 1.30:  added -loop option for -bgpat (ifdef FEATURE_LOOP); fixed bpp =
diff --git a/contrib/pngminim/decoder/makefile b/contrib/pngminim/decoder/makefile
index 4acf3c177..bbacea4bb 100644
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -54,7 +54,7 @@ ZOBJS  = adler32$(O) crc32$(O) \
 PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
 	pngread$(C) pngrio$(C) pngrtran$(C) pngrutil$(C) \
 	pngset$(C) pngtrans$(C)
-	
+
 # Standard headers
 PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
 
diff --git a/contrib/visupng/.editorconfig b/contrib/visupng/.editorconfig
new file mode 100644
index 000000000..d946b1446
--- /dev/null
+++ b/contrib/visupng/.editorconfig
@@ -0,0 +1,22 @@
+# https://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = unset
+indent_style = unset
+insert_final_newline = true
+max_doc_length = 80
+max_line_length = 100
+trim_trailing_whitespace = true
+
+[*.rc]
+end_of_line = crlf
+trim_trailing_whitespace = unset
+
+[*.ds[pw]]
+end_of_line = crlf
+max_doc_length = unset
+max_line_length = unset
+trim_trailing_whitespace = unset
diff --git a/loongarch/.editorconfig b/loongarch/.editorconfig
index b142d823b..de2e98ab4 100644
--- a/loongarch/.editorconfig
+++ b/loongarch/.editorconfig
@@ -4,4 +4,5 @@ root = false
 
 # FIXME
 [*.[ch]]
+max_doc_length = unset
 max_line_length = unset
diff --git a/mips/.editorconfig b/mips/.editorconfig
new file mode 100644
index 000000000..de2e98ab4
--- /dev/null
+++ b/mips/.editorconfig
@@ -0,0 +1,8 @@
+# https://editorconfig.org
+
+root = false
+
+# FIXME
+[*.[ch]]
+max_doc_length = unset
+max_line_length = unset
diff --git a/png.c b/png.c
index 997b8d4dc..802c61e82 100644
--- a/png.c
+++ b/png.c
@@ -1821,14 +1821,14 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
    }
 #  ifdef PNG_WARNINGS_SUPPORTED
    else
-      {
-         char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114 */
+   {
+      char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114 */
 
-         pos = png_safecat(message, (sizeof message), pos,
-             png_format_number(number, number+(sizeof number),
-             PNG_NUMBER_FORMAT_x, value));
-         pos = png_safecat(message, (sizeof message), pos, "h: "); /* +2 = 116 */
-      }
+      pos = png_safecat(message, (sizeof message), pos,
+          png_format_number(number, number+(sizeof number),
+          PNG_NUMBER_FORMAT_x, value));
+      pos = png_safecat(message, (sizeof message), pos, "h: "); /* +2 = 116 */
+   }
 #  endif
    /* The 'reason' is an arbitrary message, allow +79 maximum 195 */
    pos = png_safecat(message, (sizeof message), pos, reason);
diff --git a/powerpc/.editorconfig b/powerpc/.editorconfig
index b142d823b..de2e98ab4 100644
--- a/powerpc/.editorconfig
+++ b/powerpc/.editorconfig
@@ -4,4 +4,5 @@ root = false
 
 # FIXME
 [*.[ch]]
+max_doc_length = unset
 max_line_length = unset
diff --git a/projects/.editorconfig b/projects/.editorconfig
index bd9b590d3..dc99bd001 100644
--- a/projects/.editorconfig
+++ b/projects/.editorconfig
@@ -1,13 +1,3 @@
 # https://editorconfig.org
 
-root = false
-
-[*]
-charset = unset
-end_of_line = unset
-indent_size = unset
-indent_style = unset
-insert_final_newline = unset
-max_doc_length = unset
-max_line_length = unset
-trim_trailing_whitespace = unset
+root = true
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa
index 739805d2d..fe8e48123 100644
--- a/scripts/pnglibconf.dfa
+++ b/scripts/pnglibconf.dfa
@@ -204,26 +204,33 @@ option SET_OPTION disabled
 
 # These options are specific to the ARM NEON hardware optimizations.  At present
 # these optimizations depend on GCC specific pre-processing of an assembler (.S)
-# file so they probably won't work with other compilers.
-#
-# ARM_NEON_OPT: unset: check at compile time (__ARM_NEON__ must be defined by
-#                      the compiler, typically as a result of specifying
-#                      CC="gcc -mfpu=neon".)
-#                   0: disable (even if the CPU has a NEON FPU.)
-#                   1: check at run time (via ARM_NEON_{API,CHECK})
-#                   2: switch on unconditionally (inadvisable - instead pass
-#                      -mfpu=neon to GCC in CC)
-#           When building libpng avoid using any setting other than '0'; '1' is
-#           set automatically when either 'API' or 'CHECK' are configured in,
-#           '2' should not be necessary as -mfpu=neon will achieve the same
-#           effect as well as applying NEON optimizations to the rest of the
-#           libpng code.
-#           NOTE: any setting other than '0' requires ALIGNED_MEMORY
-# ARM_NEON_API:   (PNG_ARM_NEON == 1) allow the optimization to be switched on
-#                 with png_set_option
-# ARM_NEON_CHECK: (PNG_ARM_NEON == 1) compile a run-time check to see if Neon
-#                 extensions are supported. This is poorly supported and
-#                 deprecated - use the png_set_option API.
+# file, so they probably won't work with other compilers.
+#
+# ARM_NEON_OPT:
+#   unset: check at compile time
+#          (__ARM_NEON__ must be predefined by the compiler, as a result of
+#          passing "-mfpu=neon" to the compiler options)
+#   0: disable (even if the CPU has a NEON FPU)
+#   1: check at run time (via ARM_NEON_{API,CHECK})
+#   2: switch on unconditionally
+#      (inadvisable - instead, pass "-mfpu=neon" to the compiler)
+#   NOTE:
+#     When building libpng, avoid using any setting other than '0';
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
+#     '2' should not be necessary, as "-mfpu=neon" will achieve the same effect
+#     as well as applying the NEON optimizations to the rest of libpng.
+#   NOTE:
+#     Any setting other than '0' requires ALIGNED_MEMORY.
+#
+# ARM_NEON_API:
+#   (PNG_ARM_NEON == 1)
+#   Allow the optimization to be switched on with png_set_option.
+#
+# ARM_NEON_CHECK:
+#   (PNG_ARM_NEON == 1)
+#   Compile a run-time check to see if Neon extensions are supported.
+#   This is poorly supported and deprecated - use the png_set_option API.
+#
 setting ARM_NEON_OPT
 option ARM_NEON_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
    sets ARM_NEON_OPT 1
@@ -232,24 +239,29 @@ option ARM_NEON_CHECK disabled requires ALIGNED_MEMORY,
 
 # These options are specific to the PowerPC VSX hardware optimizations.
 #
-# POWERPC_VSX_OPT: unset: check at compile time (__PPC64__,__ALTIVEC__,__VSX__
-#                      must be defined by the compiler, typically as a result
-#                      of specifying
-#                      "-mvsx -maltivec" compiler flags)
-#                   0: disable (even if the CPU supports VSX.)
-#                   1: check at run time (via POWERPC_VSX_{API,CHECK})
-#                   2: switch on unconditionally (inadvisable - instead pass
-#                      -mvsx -maltivec to compiler options)
-#           When building libpng avoid using any setting other than '0'; '1' is
-#           set automatically when either 'API' or 'CHECK' are configured in,
-#           '2' should not be necessary as "-mvsx -maltivec" will achieve the same
-#           effect as well as applying VSX optimizations to the rest of the
-#           libpng code.
-# POWERPC_VSX_API:   (PNG_POWERPC_VSX == 1) allow the optimization to be switched on
-#                 with png_set_option
-# POWERPC_VSX_CHECK: (PNG_POWERPC_VSX == 1) compile a run-time check to see if VSX
-#                 extensions are supported. This is supported not for all OSes
-#                 (see contrib/powerpc/README)
+# POWERPC_VSX_OPT:
+#   unset: check at compile time
+#          (__PPC64__,__ALTIVEC__,__VSX__ must be predefined by the compiler,
+#          as a result of passing "-mvsx -maltivec" to the compiler options)
+#   0: disable (even if the CPU supports VSX)
+#   1: check at run time (via POWERPC_VSX_{API,CHECK})
+#   2: switch on unconditionally
+#      (inadvisable - instead, pass "-mvsx -maltivec" to the compiler)
+#   NOTE:
+#     When building libpng, avoid using any setting other than '0';
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
+#     '2' should not be necessary, as "-mvsx -maltivec" will achieve the same
+#     effect as well as applying the VSX optimizations to the rest of libpng.
+#
+# POWERPC_VSX_API:
+#   (PNG_POWERPC_VSX == 1)
+#   Allow the optimization to be switched on with png_set_option.
+#
+# POWERPC_VSX_CHECK:
+#   (PNG_POWERPC_VSX == 1)
+#   Compile a run-time check to see if VSX extensions are supported.
+#   This is not supported on all systems. See contrib/powerpc-vsx/README.
+#
 setting POWERPC_VSX_OPT
 option POWERPC_VSX_API disabled enables SET_OPTION,
   sets POWERPC_VSX_OPT 1
@@ -258,23 +270,30 @@ option POWERPC_VSX_CHECK disabled,
 
 # These options are specific to the MIPS MSA hardware optimizations.
 #
-# MIPS_MSA_OPT: unset: check at compile time (__mips_msa must be defined by
-#                      the compiler, typically as a result of specifying
-#                      "-mmsa -mfp64" compiler flags)
-#                   0: disable (even if the CPU supports MSA.)
-#                   1: check at run time (via MIPS_MSA_{API,CHECK})
-#                   2: switch on unconditionally (inadvisable - instead pass
-#                      -mmsa -mfp64 to compiler options)
-#           When building libpng avoid using any setting other than '0'; '1' is
-#           set automatically when either 'API' or 'CHECK' are configured in,
-#           '2' should not be necessary as "-mmsa -mfp64" will achieve the same
-#           effect as well as applying MSA optimizations to the rest of the
-#           libpng code.
-#           NOTE: any setting other than '0' requires ALIGNED_MEMORY
-# MIPS_MSA_API:   (PNG_MIPS_MSA == 1) allow the optimization to be switched on
-#                 with png_set_option.
-# MIPS_MSA_CHECK: (PNG_MIPS_MSA == 1) compile a run-time check to see if MSA
-#                 extensions are supported.
+# MIPS_MSA_OPT:
+#   unset: check at compile time
+#          (__mips_msa must be predefined by the compiler, as a result of
+#          passing "-mmsa -mfp64" to the compiler options)
+#   0: disable (even if the CPU supports MSA)
+#   1: check at run time (via MIPS_MSA_{API,CHECK})
+#   2: switch on unconditionally
+#      (inadvisable - instead, pass "-mmsa -mfp64" to the compiler)
+#   NOTE:
+#     When building libpng, avoid using any setting other than '0';
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
+#     '2' should not be necessary, as "-mmsa -mfp64" will achieve the same
+#     effect as well as applying the MSA optimizations to the rest of libpng.
+#   NOTE:
+#     Any setting other than '0' requires ALIGNED_MEMORY.
+#
+# MIPS_MSA_API:
+#   (PNG_MIPS_MSA == 1)
+#   Allow the optimization to be switched on with png_set_option.
+#
+# MIPS_MSA_CHECK:
+#   (PNG_MIPS_MSA == 1)
+#   Compile a run-time check to see if MSA extensions are supported.
+#
 setting MIPS_MSA_OPT
 option MIPS_MSA_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
   sets MIPS_MSA_OPT 1
@@ -283,22 +302,30 @@ option MIPS_MSA_CHECK disabled requires ALIGNED_MEMORY,
 
 # These options are specific to the MIPS MMI hardware optimizations.
 #
-# MIPS_MMI_OPT: unset: check at compile time (__mips_loongson_mmi must be defined by
-#                      the compiler, typically as a result of specifying
-#                      "-mloongson-mmi -march=loongson3a" compiler flags)
-#                   0: disable (even if the CPU supports MMI.)
-#                   1: check at run time (via MIPS_MMI_{API,CHECK})
-#                   2: switch on unconditionally (inadvisable - instead pass
-#                      -mloongson-mmi -march=loongson3a to compiler options)
-#           When building libpng avoid using any setting other than '0'; '1' is
-#           set automatically when either 'API' or 'CHECK' are configured in,
-#           '2' should not be necessary as "-mloongson-mmi -march=loongson3a" will achieve the same
-#           effect as well as applying MMI optimizations to the rest of the
-#           libpng code.
-# MIPS_MMI_API:   (PNG_MIPS_MMI == 1) allow the optimization to be switched on
-#                 with png_set_option
-# MIPS_MMI_CHECK: (PNG_MIPS_MMI == 1) compile a run-time check to see if MMI
-#                 extensions are supported.
+# MIPS_MMI_OPT:
+#   unset: check at compile time
+#          (__mips_loongson_mmi must be defined by the compiler, as a result of
+#          passing "-mloongson-mmi -march=loongson3a" to the compiler options)
+#   0: disable (even if the CPU supports MMI)
+#   1: check at run time (via MIPS_MMI_{API,CHECK})
+#   2: switch on unconditionally
+#      (inadvisable - instead, pass "-mloongson-mmi -march=loongson3a" to the
+#      compiler)
+#   NOTE:
+#     When building libpng, avoid using any setting other than '0';
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
+#     '2' should not be necessary, as "-mloongson-mmi -march=loongson3a" will
+#     achieve the same effect as well as applying the MMI optimizations to the
+#     rest of libpng.
+#
+# MIPS_MMI_API:
+#   (PNG_MIPS_MMI == 1)
+#   Allow the optimization to be switched on with png_set_option.
+#
+# MIPS_MMI_CHECK:
+#   (PNG_MIPS_MMI == 1)
+#   Compile a run-time check to see if MMI extensions are supported.
+#
 setting MIPS_MMI_OPT
 option MIPS_MMI_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
   sets MIPS_MMI_OPT 1
diff --git a/tests/pngtest-all b/tests/pngtest-all
index b4280f5ff..668d92e9c 100755
--- a/tests/pngtest-all
+++ b/tests/pngtest-all
@@ -15,7 +15,7 @@ TEST(){
        77) test_status="$skip"
            skipped=1;;
        *)  test_status="$fail"
-           st="$status";; 
+           st="$status";;
    esac
    echo "===============$test_status $* ===================="
    return "$status"