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

.editorconfig

@@ -10,29 +10,44 @@ trim_trailing_whitespace = true
 # Traditionally, the end-of-line character has been platform-specific.
 end_of_line = unset
 
-[*.[chS]]
-indent_style = space
-max_line_length = 81
-
-[*.{awk,cmake,dfa,in,sh}]
-indent_style = space
-max_line_length = 100
-
 [*.txt]
 indent_style = space
-max_line_length = unset
+
+[*.[chS]]
+indent_style = space
+max_doc_length = 80
+max_line_length = 81
+# FIXME: max_line_length should be 80
+
+[*.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
+
+[*.{in,sh}]
+indent_style = space
+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

contrib/.editorconfig

@@ -2,12 +2,6 @@
 
 root = false
 
-[*]
+[*.[ch]]
-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

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)

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 =

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

loongarch/.editorconfig

@@ -4,4 +4,5 @@ root = false
 
 # FIXME
 [*.[ch]]
+max_doc_length = unset
 max_line_length = unset

mips/.editorconfig

@@ -0,0 +1,8 @@
+# https://editorconfig.org
+
+root = false
+
+# FIXME
+[*.[ch]]
+max_doc_length = unset
+max_line_length = unset

powerpc/.editorconfig

@@ -4,4 +4,5 @@ root = false
 
 # FIXME
 [*.[ch]]
+max_doc_length = unset
 max_line_length = unset

projects/.editorconfig

@@ -1,13 +1,3 @@
 # https://editorconfig.org
 
-root = false
+root = true
-
-[*]
-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

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.
+# file, so they probably won't work with other compilers.
 #
-# ARM_NEON_OPT: unset: check at compile time (__ARM_NEON__ must be defined by
+# ARM_NEON_OPT:
-#                      the compiler, typically as a result of specifying
+#   unset: check at compile time
-#                      CC="gcc -mfpu=neon".)
+#          (__ARM_NEON__ must be predefined by the compiler, as a result of
-#                   0: disable (even if the CPU has a NEON FPU.)
+#          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
+#   2: switch on unconditionally
-#                      -mfpu=neon to GCC in CC)
+#      (inadvisable - instead, pass "-mfpu=neon" to the compiler)
-#           When building libpng avoid using any setting other than '0'; '1' is
+#   NOTE:
-#           set automatically when either 'API' or 'CHECK' are configured in,
+#     When building libpng, avoid using any setting other than '0';
-#           '2' should not be necessary as -mfpu=neon will achieve the same
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
-#           effect as well as applying NEON optimizations to the rest of the
+#     '2' should not be necessary, as "-mfpu=neon" will achieve the same effect
-#           libpng code.
+#     as well as applying the NEON optimizations to the rest of libpng.
-#           NOTE: any setting other than '0' requires ALIGNED_MEMORY
+#   NOTE:
-# ARM_NEON_API:   (PNG_ARM_NEON == 1) allow the optimization to be switched on
+#     Any setting other than '0' requires ALIGNED_MEMORY.
-#                 with png_set_option
+#
-# ARM_NEON_CHECK: (PNG_ARM_NEON == 1) compile a run-time check to see if Neon
+# ARM_NEON_API:
-#                 extensions are supported. This is poorly supported and
+#   (PNG_ARM_NEON == 1)
-#                 deprecated - use the png_set_option API.
+#   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__
+# POWERPC_VSX_OPT:
-#                      must be defined by the compiler, typically as a result
+#   unset: check at compile time
-#                      of specifying
+#          (__PPC64__,__ALTIVEC__,__VSX__ must be predefined by the compiler,
-#                      "-mvsx -maltivec" compiler flags)
+#          as a result of passing "-mvsx -maltivec" to the compiler options)
-#                   0: disable (even if the CPU supports VSX.)
+#   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
+#   2: switch on unconditionally
-#                      -mvsx -maltivec to compiler options)
+#      (inadvisable - instead, pass "-mvsx -maltivec" to the compiler)
-#           When building libpng avoid using any setting other than '0'; '1' is
+#   NOTE:
-#           set automatically when either 'API' or 'CHECK' are configured in,
+#     When building libpng, avoid using any setting other than '0';
-#           '2' should not be necessary as "-mvsx -maltivec" will achieve the same
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
-#           effect as well as applying VSX optimizations to the rest of the
+#     '2' should not be necessary, as "-mvsx -maltivec" will achieve the same
-#           libpng code.
+#     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_API:
-# POWERPC_VSX_CHECK: (PNG_POWERPC_VSX == 1) compile a run-time check to see if VSX
+#   (PNG_POWERPC_VSX == 1)
-#                 extensions are supported. This is supported not for all OSes
+#   Allow the optimization to be switched on with png_set_option.
-#                 (see contrib/powerpc/README)
+#
+# 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
+# MIPS_MSA_OPT:
-#                      the compiler, typically as a result of specifying
+#   unset: check at compile time
-#                      "-mmsa -mfp64" compiler flags)
+#          (__mips_msa must be predefined by the compiler, as a result of
-#                   0: disable (even if the CPU supports MSA.)
+#          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
+#   2: switch on unconditionally
-#                      -mmsa -mfp64 to compiler options)
+#      (inadvisable - instead, pass "-mmsa -mfp64" to the compiler)
-#           When building libpng avoid using any setting other than '0'; '1' is
+#   NOTE:
-#           set automatically when either 'API' or 'CHECK' are configured in,
+#     When building libpng, avoid using any setting other than '0';
-#           '2' should not be necessary as "-mmsa -mfp64" will achieve the same
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
-#           effect as well as applying MSA optimizations to the rest of the
+#     '2' should not be necessary, as "-mmsa -mfp64" will achieve the same
-#           libpng code.
+#     effect as well as applying the MSA optimizations to the rest of libpng.
-#           NOTE: any setting other than '0' requires ALIGNED_MEMORY
+#   NOTE:
-# MIPS_MSA_API:   (PNG_MIPS_MSA == 1) allow the optimization to be switched on
+#     Any setting other than '0' requires ALIGNED_MEMORY.
-#                 with png_set_option.
+#
-# MIPS_MSA_CHECK: (PNG_MIPS_MSA == 1) compile a run-time check to see if MSA
+# MIPS_MSA_API:
-#                 extensions are supported.
+#   (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
+# MIPS_MMI_OPT:
-#                      the compiler, typically as a result of specifying
+#   unset: check at compile time
-#                      "-mloongson-mmi -march=loongson3a" compiler flags)
+#          (__mips_loongson_mmi must be defined by the compiler, as a result of
-#                   0: disable (even if the CPU supports MMI.)
+#          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
+#   2: switch on unconditionally
-#                      -mloongson-mmi -march=loongson3a to compiler options)
+#      (inadvisable - instead, pass "-mloongson-mmi -march=loongson3a" to the
-#           When building libpng avoid using any setting other than '0'; '1' is
+#      compiler)
-#           set automatically when either 'API' or 'CHECK' are configured in,
+#   NOTE:
-#           '2' should not be necessary as "-mloongson-mmi -march=loongson3a" will achieve the same
+#     When building libpng, avoid using any setting other than '0';
-#           effect as well as applying MMI optimizations to the rest of the
+#     '1' is set automatically when either 'API' or 'CHECK' are configured in;
-#           libpng code.
+#     '2' should not be necessary, as "-mloongson-mmi -march=loongson3a" will
-# MIPS_MMI_API:   (PNG_MIPS_MMI == 1) allow the optimization to be switched on
+#     achieve the same effect as well as applying the MMI optimizations to the
-#                 with png_set_option
+#     rest of libpng.
-# MIPS_MMI_CHECK: (PNG_MIPS_MMI == 1) compile a run-time check to see if MMI
+#
-#                 extensions are supported.
+# 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