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Improve cmdbar parsing and add -l replace flag

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The -l flag to the replace command means "literal" and will treat
the search term literally instead of as a regular expression.

The command bar also now supports expanding environment variables
and running expressions through the shell and using the result
in the command.
This commit is contained in:
Zachary Yedidia
2017-11-22 13:54:39 -05:00
parent 2ee7adb196
commit 0360a2fcb5
9 changed files with 141 additions and 157 deletions
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17
runtime/help/commands.md
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@@ -9,11 +9,12 @@ Here are the possible commands that you can use.
will 'save as' the filename.
* `replace "search" "value" flags`: This will replace `search` with `value`.
The `flags` are optional. At this point, there is only one flag: `-a`, which
replaces all occurrences at once.
The `flags` are optional. Possible flags are:
* `-a`: Replace all occurrences at once
* `-l`: Do a literal search instead of a regex search
Note that `search` must be a valid regex. If one of the arguments does not
have any spaces in it, you may omit the quotes.
Note that `search` must be a valid regex (unless `-l` is passed). If one
of the arguments does not have any spaces in it, you may omit the quotes.
* `replaceall "search" "value"`: This will replace `search` with `value` without
user confirmation.
@@ -84,3 +85,11 @@ Here are the possible commands that you can use.
The following commands are provided by the default plugins:
* `lint`: Lint the current file for errors.
# Command Parsing
When running a command, you can use extra syntax that micro will expand before
running the command. To use an argument with a space in it, simply put it in
quotes. You can also use environment variables in the command bar and they
will be expanded to their value. Finally, you can put an expression in backticks
and it will be evaluated by the shell beforehand.