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Update fish shell #1758

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Update fish shell #1758

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25d9964
Fish page clean-up:
Dec 15, 2021
4840172
Fix formatting
Dec 15, 2021
32a9832
Clean-up:
Dec 15, 2021
a226441
Join Help section with Keys section
Dec 17, 2021
e867c9a
More descriptions and chapters
Dec 19, 2021
e21a7d7
Enhance code descriptions
Dec 19, 2021
4cff1a8
Update code samples:
Dec 19, 2021
7ae27e1
Fix quoting and code block language
Dec 19, 2021
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Update code samples: 
- prefer "echo" command to "set $my_variable"
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EmilySeville7cfg authored and EmilySeville7cfg committed Dec 19, 2021
commit 4cff1a8efa6965af6b01b9eeccd6451dde313339
10 changes: 5 additions & 5 deletions fish-shell.md
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Expand Up @@ -75,9 +75,9 @@ set --erase my_variable
Slice the variable:

```fish
set my_variable $another_variable[1..10]
set my_variable $another_variable[2..]
set my_variable $another_variable[..-2]
echo $my_variable[1..10]
echo $my_variable[2..]
echo $my_variable[..-2]
```

## Arithmetic
Expand Down Expand Up @@ -222,15 +222,15 @@ my_command | another_command
Replace the command invocation with it's stdout output:

```fish
set my_variable (math $my_variable + 1)
echo (math $my_variable + 1)
```

### Process substitution

Replace the command invocation with a temporary file name with a command stdout output:

```bash
math $my_variable + 1 | psub
echo (math $my_variable + 1 | psub)
```

## Functions
Expand Down