kc3-lang/libxkbcommon/doc/message-registry.yaml

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• Hash : ca7aa69c
  Author :
  Date : 2023-09-26T17:05:05
  

  Disallow producing NULL character with escape sequences NULL usually terminates the strings; allowing to produce it via escape sequences may lead to undefined behaviour. - Make NULL escape sequences (e.g. `\0` and `\x0`) invalid. - Add corresponding test. - Introduce the new message: XKB_WARNING_INVALID_ESCAPE_SEQUENCE.

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• doc/message-registry.yaml

• # Guidelines:
  # • A message code must always have the same meaning forever.
  # • Codes may be retired or introduced in new releases. In order to avoid
  #   clashes, retired codes must not be deleted.
  # • Codes should not themselves reflect classification, e.g. a range for parse
  #   errors and a range for each keymap component.
  # • Codes should not be assigned sequentially because it is misleading.
  # • Codes must be in the range 1..999. This range may be extended once every
  #   code has be assigned.
  #
  # See the following guidelines for futher details on good practices:
  # https://github.com/haskellfoundation/error-message-index/blob/main/tool-developers.md#code-assignment-recommendations
  
  # NOTE: Field “added: ALWAYS” means that the precise version is unknown and
  # anterior to the introduction of the message registry. It will be replaced by
  # the default version 1.0.0 in the generated documentation. While this is deemed
  # good enough to avoid spelunking commit history, a more precise version would
  # be welcome.
  
  # TODO: fix missing detailed description, examples, resolution
  
  - id: "malformed-number-literal"
    code: 34
    added: ALWAYS
    type: error
    description: "Warn on malformed number literals"
    details: |
      xkbcommon can parse the following number literal formats:
  
      - *decimal integer:* 1, 123, etc.
      - *decimal floating-point number:* 1.23, etc.
      - *hexadecimal integer:* prefixed with “0x”: 0x123, 0xff, 0xAB, etc.
  - id: "conflicting-key-type-preserve-entries"
    code: 43
    added: ALWAYS
    type: warning
    description: "Conflicting “preserve” entries in a key type"
  - id: "unsupported-modifier-mask"
    code: 60
    added: ALWAYS
    type: error
    description: "Warn on unsupported modifier mask"
  - id: "expected-array-entry"
    code: 77
    added: ALWAYS
    type: error
    description: "Expected an array entry, but the index is missing"
  - id: "illegal-keycode-alias"
    code: 101
    added: ALWAYS
    type: warning
    description: "Illegal keycode alias with the name of a real key"
  - id: "unrecognized-keysym"
    code: 107
    added: ALWAYS
    type: warning
    description: "Warn on unrecognized keysyms"
    details: |
      xkbcommon replaces keysyms it does not recognize by the keysym `NoSymbol`.
  
      You may find the list of supported keysyms in
      `include/xkbcommon/xkbcommon-keysyms.h`.
    examples:
      - name: Unrecognized keysym “`coma`”
        description: |
          **Error message:**
  
          ```
          xkbcommon: WARNING: [XKB-107] de:31:20: unrecognized keysym "coma"
          ```
  
          xkbcommon does not recognize the keysym “`coma`”. It is most probably
          a typo for “<code>com<em>m</em>a</code>”.
          See: `XKB_KEY_comma` in `include/xkbcommon/xkbcommon-keysyms.h`.
        before: |
          ```c
          key <AB08> {[ coma, semicolon, periodcentered, multiply ]};
          ```
        after: |
          ```c
          key <AB08> {[ comma, semicolon, periodcentered, multiply ]};
          ```
  - id: "undeclared-virtual-modifier"
    code: 123
    added: ALWAYS
    type: error
    description: "A virtual modifier is used before being declared"
  - id: "wrong-statement-type"
    code: 150
    added: ALWAYS
    type: error
    description: "The type of the statement is not allowed in the context"
  - id: "unsupported-geometry-section"
    code: 172
    added: ALWAYS
    type: warning
    description: "Geometry sections are not supported"
  - id: "cannot-infer-key-type"
    code: 183
    added: ALWAYS
    type: warning
    description: "Warn if no key type can be inferred"
  - id: "invalid-escape-sequence"
    code: 193
    added: ALWAYS
    type: warning
    description: "Invalid escape sequence in a string"
  - id: "illegal-key-type-preserve-result"
    code: 195
    added: ALWAYS
    type: warning
    description: "The result of a key type “preserve” entry must be a subset of its input modifiers."
  - id: "invalid-include-statement"
    code: 203
    added: ALWAYS
    type: error
    description: "Syntax error in the include statement"
  - id: "invalid-modmap-entry"
    code: 206
    added: ALWAYS
    type: error
    description: "A modmap entry is invalid"
  - id: "unsupported-group-index"
    code: 237
    added: ALWAYS
    type: error
    description: "Warn when a group index is not supported"
    details: |
      xkbcommon supports group index in the range (1..{{XKB_MAX_GROUPS}}).
  - id: "conflicting-key-type-level-names"
    code: 239
    added: ALWAYS
    type: warning
    description: "The name of a key type level is defined multiple times."
  - id: "invalid-set-default-statement"
    code: 254
    added: ALWAYS
    type: error
    description: "Invalid statement setting default values"
  - id: "conflicting-key-type-map-entry"
    code: 266
    added: ALWAYS
    type: warning
    description: "Conflicting “map” entries in type definition"
  - id: "undefined-key-type"
    code: 286
    added: ALWAYS
    type: warning
    description: "Warn if using an undefined key type"
  - id: "non-base-group-name"
    code: 305
    added: ALWAYS
    type: warning
    description: "Warn if a group name was defined for group other than the first one"
  - id: "unsupported-shift-level"
    code: 312
    added: ALWAYS
    type: error
    description: "Warn when a shift level is not supported"
    details: |
      Shift levels are _one_-indexed. xkbcommon supports two formats of shift levels:
      as numbers and as identifiers `LevelN`, where `N` is in the range (1..8).
  - id: "included-file-not-found"
    code: 338
    added: ALWAYS
    type: error
    description: "Could not find a file used in an include statement"
  - id: "unknown-operator"
    code: 345
    added: ALWAYS
    type: error
    description: "Use of an operator that is unknown and thus unsupported"
  - id: "duplicate-entry"
    code: 378
    added: ALWAYS
    type: warning
    description: "An entry is duplicated and will be ignored"
  - id: "conflicting-key-type-definitions"
    code: 407
    added: ALWAYS
    type: warning
    description: "Conflicting definitions of a key type"
    details: |
      The given key type is defined multiple times, but only one definition is kept.
  - id: "wrong-scope"
    code: 428
    added: ALWAYS
    type: error
    description: "A statement is in a wrong scope and should be moved"
  - id: "missing-default-section"
    code: 433
    added: ALWAYS
    type: warning
    description: "Missing default section in included file"
    details: |
      When using an include statement, the included file may contains multiple sections.
      The include statement may specify the name of the section to include, or leave it
      unspecified. In the latter case, the included file must then define a *default* section.
      The present warning is shown when no default section is defined.
  
      To solve this, either fix the include statement by specifying the exact section to
      include, or declare a default section in the included file.
  - id: "conflicting-key-symbol"
    code: 461
    added: ALWAYS
    type: warning
    description: "Warn if there are conflicting keysyms while merging keys"
  - id: "invalid-operation"
    code: 478
    added: ALWAYS
    type: error
    description: "The operation is invalid in the context"
  - id: "numeric-keysym"
    code: 489
    added: 1.6.0
    type: warning
    description: "Warn on numeric keysym (other than 0-9)"
    details: |
      Numeric keysyms are not human-friendly. Use the corresponding named keysym
      or Unicode keysym, if available.
    examples:
      - name: Hexadecimal keysym `0x1001ed0`
        description: |
          **Error message:**
  
          ```
          xkbcommon: WARNING: [XKB-489] numeric keysym "0x1001ed0"
          ```
        before: |
          ```c
          key <AE01> { [ 0x1001ed0] };
          ```
        after: |
          ```c
          // Preferred form: human-friendly
          key <AE01> { [ Ocircumflexacute ] };
          // or
          key <AE01> { [ U1ED0 ] };
          ```
  - id: "extra-symbols-ignored"
    code: 516
    added: ALWAYS
    type: warning
    description: "TODO: add description"
  - id: "conflicting-key-name"
    code: 523
    added: ALWAYS
    type: warning
    description: "Conflicting definitions of a key name or alias"
  - id: "allocation-error"
    code: 550
    added: ALWAYS
    type: error
    description: "Cannot allocate memory"
  - id: "wrong-field-type"
    code: 578
    added: ALWAYS
    type: error
    description: "Warn when a field has not the expected type"
  - id: "invalid-real-modifier"
    code: 623
    added: ALWAYS
    type: error
    description: "Invalid _real_ modifier"
  - id: "unknown-char-escape-sequence"
    code: 645
    added: ALWAYS
    type: warning
    description: "Warn on unknown escape sequence in string literal"
    details: |
      xkbcommon support the following escape sequences in string literals:
  
      | Escape sequence | Corresponding character             |
      | --------------- | ----------------------------------- |
      | `\b`            | `U+0008` Backspace                  |
      | `\t`            | `U+0009` Character tabulation       |
      | `\n`            | `U+000A` Line feed                  |
      | `\v`            | `U+000B` Vertical tabulation        |
      | `\f`            | `U+000C` Form feed                  |
      | `\r`            | `U+000D` Carriage return            |
      | `\e`            | `U+001B` Escape                     |
      | `\\`            | `U+005C` Backslash                  |
      | `\NNN`          | _Octal_ escape, from `\0` to `\777` |
  - id: "invalid-included-file"
    code: 661
    added: ALWAYS
    type: error
    description: "The target file of an include statement could not be processed"
  - id: "multiple-groups-at-once"
    code: 700
    added: ALWAYS
    type: warning
    description: "Warn if a key defines multiple groups at once"
  - id: "unsupported-symbols-field"
    code: 711
    added: ALWAYS
    type: warning
    description: "A legacy X11 symbol field is not supported"
  - id: "invalid-syntax"
    code: 769
    added: ALWAYS
    type: error
    description: "The syntax is invalid and the file cannot be parsed"
  - id: "undefined-keycode"
    code: 770
    added: ALWAYS
    type: warning
    description: "Reference to an undefined keycode"
  - id: "invalid-expression-type"
    code: 784
    added: ALWAYS
    type: error
    description: "An expression has not the expected type"
  - id: "invalid-value"
    code: 796
    added: ALWAYS
    type: error
    description: "A value is invalid and will be ignored"
  - id: "conflicting-modmap"
    code: 800
    added: ALWAYS
    type: warning
    description: "Warn if there are conflicting modmap definitions"
    details: |
      @todo detailed explanation and examples
  - id: "unknown-field"
    code: 812
    added: ALWAYS
    type: error
    description: "A field is unknown and will be ignored"
  - id: "conflicting-key-action"
    code: 883
    added: ALWAYS
    type: warning
    description: "Warn if there are conflicting actions while merging keys"
  - id: "conflicting-key-type-merging-groups"
    code: 893
    added: ALWAYS
    type: warning
    description: "Warn if there are conflicting key types while merging groups"
  - id: "conflicting-key-symbols-entry"
    code: 901
    added: ALWAYS
    type: error
    description: "Conflicting symbols entry for a key"
  - id: "missing-symbols-group-name-index"
    code: 903
    added: ALWAYS
    type: warning
    description: "Missing group index in a group name entry"
  - id: "conflicting-key-fields"
    code: 935
    added: ALWAYS
    type: warning
    description: "Warn if there are conflicting fields while merging keys"
  - id: "invalid-identifier"
    code: 949
    added: ALWAYS
    type: error
    description: "An identifier is used but is not built-in"
  - id: "unresolved-keymap-symbol"
    code: 965
    added: ALWAYS
    type: warning
    description: "Warn if using a symbol not defined in the keymap"
  - id: "undeclared-modifiers-in-key-type"
    code: 971
    added: ALWAYS
    type: warning
    description: "Some modifiers used in a key type “map” or “preserve” entry are not declared"
    details: |
      The modifiers used in `map` or `preserve` entries should be declared using the entry
      `modifiers` in the key type.
  
  # TODO: deprecated keysym
  # TODO: unicode keysym when named and recommended keysym exists
  

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