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Explain that the short form of variable references
in the if command does not apply to ENV and CACHE vars.
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Short intro to pages cmake-variables.7 and cmake-env-variables.7,
with backlinks to cmake-language.7.
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Section "Variables References" said that environment and cache
variables are "evaluated in the same contexts as a normal variable
reference". The reader has to guess what "contexts" means in
this context. Probably "inside a Quoted Argument or an Unquoted
Argument", exactly as for ordinary variable references.
But this is exactly what the reader would tacitly assume anyway.
Therefore I think the removed clause was unnecessary, and possibly
more confusing than helpful.
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* The code snippets in the docs consist of CMake code mixed
with syntax definition punctuation like < > [ ] ... Therefore
a pure CMake lexer is inadequate. Here it is replaced by a
CMake syntax definition parser.
* Fixed syntax definition snippets in FindPkgConfig.cmake to
make best use of syntax highlighting. This source file is the
hardest to support because it contains comparison operators
<= = >=, which need special attention to avoid confusion
with the placeholder indicators <...>.
* Fixed syntax in execute_process.rst (there were unbalanced
brackets).
* Disabled syntax highlighting for long string examples in
cmake-language.7.rst.
* No highlighting of removed syntax in CMP0049
* To inspect the outcome of this patch, see e.g. the pages
* manual/cmake-buildsystem.7.html
* module/ExternalProject.html
* module/FindPkgConfig.html
which are particularly rich in complex code snippets.
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This was overlooked in the initial implementation of CMP0053. However,
an additional policy to reject it again is not worth it. Instead, add
tests and document the behavior.
Fixes: #17883
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Also add a test case for the behavior.
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Clarify definitions of `bracket_open` and `bracket_close` productions.
In note about unquoted arguments containing unescaped double quotes,
provide examples of how they can be written as quoted arguments.
Also clarify location of nested calls supported by variable function
scope.
Suggested-by: Дилян Палаузов <dilyan.palauzov@aegee.org>
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Fixes: #16661
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Some of our "cmake" code blocks do not use fully valid CMake syntax
because they have placeholders for human reference. Sphinx has
never been able to properly lex and highlight these, but now warns.
Fix each block's syntax or change to a non-cmake block as appropriate.
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This fixes several reported bugs about CMake not handling
non-ascii paths on Windows.
Practically, the use of some unicode characters may still
be limited by the build or compiler tools.
For example, a user may be limited by the build tools to
using characters within the Windows ANSI code page (which can
include non-ascii characters in the current system language).
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Inspired-by: Doug Barbieri
Signed-off-by: Gregor Jasny <gjasny@googlemail.com>
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A latex document can have its own TOC.
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Add reStructuredText hyperlink targets for the bracket, quoted, and
unquoted argument sections.
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