(cherry picked from commit 822078e)

(cherry picked from commit 982086d)

…ort]

(cherry picked from commit ad3c100)

(cherry picked from commit 0490324)

(cherry picked from commit 2120fb2)

(cherry picked from commit 4ac100c)

(cherry picked from commit 3d0c756)

(cherry picked from commit 2baa21d)

(cherry picked from commit 8f89164)

…12472)

* Clarifies experimental / parallel on manual.rst

Details:
Calling `useParallel()` in example fails with compiler error
  Error: 'parallel' section without 'spawn'

Adding `spawn` causes error:
  Error: internal error: (filename: "ccgexprs.nim", line: 1032, column: 17)
  No stack traceback available
  To create a stacktrace, rerun compilation with ./koch temp c <file>

Therefore a separate proc, `threadedEcho`, is added for the echo'ing
of the string, which allows the example to build, however, `sync()`
must be added so that the "echo in parallel" strings will actually
be shown on the terminal. Otherwise, the program will spawn of the
threads and exit before they can return to the main thread.

* Fixes and clarifies example for threading in manual.rst

Issue:
Calling useParallel() in example failed with compiler error
`Error: 'parallel' section without 'spawn'`

Adding spawn yielded compiler error:
```bash
Error: internal error: (filename: "ccgexprs.nim", line: 1032, column: 17)
No stack traceback available
To create a stacktrace, rerun compilation with ./koch temp c
```

Proposed Solution:
- Separate proc, threadedEcho, is added for the echo'ing
  of the string, which allows the example to build
- Added the thread number so that it can demonstrate that sometimes
  threads which were started sooner, come back after threads which
  were started later.

(cherry picked from commit d731646)

(cherry picked from commit 9ac062b)

Note that contrary to what docgen.rst currently says, the ids have
to match exactly or else most web browsers will not jump to the
intended symbol.

(cherry picked from commit 93461ae)

This is more friendly to those browsing the documentation without
a network connection. The nim-doc package in Debian allows this,
for example.

Also, the domain name being used was not consistent. It could have
been either nim-lang.org or nim-lang.github.io, and those reading
the stable docs could have found themselves suddenly reading the
devel docs instead.

(cherry picked from commit 72147c9)

(cherry picked from commit 79aa589)

cast[T](0) is interpreted as a link to id 0 with text T, so escape
the opening parentheses to display the intended output.

(cherry picked from commit 59c1f7c)

(cherry picked from commit e6d5379)

(cherry picked from commit 3ad4806)

(cherry picked from commit d5cd5b0)

(cherry picked from commit 801a794)

(cherry picked from commit 8a599fb)

…#12490) [backport]

(cherry picked from commit 8040c84)

(cherry picked from commit e0d13ab)

…ackport]

(cherry picked from commit 1d42108)

(cherry picked from commit 3a62cf2)

(cherry picked from commit 3c567bc)

* integer literal documentation [ci skip]

* apply feedback [ci skip]

(cherry picked from commit 91af075)

…backport]

* colors: fix the 'mix' template
* colors: make most examples runnable

(cherry picked from commit ee119f7)

…12537 [ci skip] (#12544)

(cherry picked from commit c58aa77)

(cherry picked from commit 160c07b)

…for default values (#12538)

(cherry picked from commit e58c2d2)

(cherry picked from commit de5f6a0)

(cherry picked from commit 1214960)

(cherry picked from commit 34dbc56)

Using `pacman` command in Manjaro Linux

…rrentDir and currentSourcePath (#12565)

Fixes #10477.

(cherry picked from commit d914e9a)

(cherry picked from commit 4e0f120)

(cherry picked from commit ceda586)

(cherry picked from commit 62fc3db)

'countBits32' is now fixed in the same way that
'countBits64' was already patched earlier (by adding 'u32
where needed).

(cherry picked from commit ae32d63)

(cherry picked from commit cf5c3f2)

(cherry picked from commit 61ea856)

One improvement over #devel is visible in the transformation of getEnv. With this approach we move to result whenever possible.

(cherry picked from commit 5f5879d)

(cherry picked from commit 59c2126)

Derivative of `b*pow(x, 2)` is `2*b*x`, while old version had `2*a*x`

(cherry picked from commit 5ccbf7e)

(cherry picked from commit 5381c81)

(cherry picked from commit 717da9f)