diff options
Diffstat (limited to 'doc_src/begin.txt')
-rw-r--r-- | doc_src/begin.txt | 47 |
1 files changed, 24 insertions, 23 deletions
diff --git a/doc_src/begin.txt b/doc_src/begin.txt index fafe9849..aee50f5c 100644 --- a/doc_src/begin.txt +++ b/doc_src/begin.txt @@ -1,22 +1,23 @@ \section begin begin - start a new block of code \subsection begin-synopsis Synopsis - <tt>begin; [COMMANDS...;] end</tt> +\fish{syn} +begin; [COMMANDS...;] end +\endfish \subsection begin-description Description -\c begin is used to create a new block of code. +`begin` is used to create a new block of code. -The block -is unconditionally executed. <code>begin; ...; end</tt> is equivalent -to <tt>if true; ...; end</tt>. +The block is unconditionally executed. `begin; ...; end` is equivalent +to `if true; ...; end`. -\c begin is used to group a number of commands into a block. +`begin` is used to group a number of commands into a block. This allows the introduction of a new variable scope, redirection of the input or output of a set of commands as a group, or to specify precedence when -using the conditional commands like \c and. +using the conditional commands like `and`. -\c begin does not change the current exit status. +`begin` does not change the current exit status. \subsection begin-example Example @@ -24,26 +25,26 @@ The following code sets a number of variables inside of a block scope. Since the variables are set inside the block and have local scope, they will be automatically deleted when the block ends. -<pre> +\fish begin - set -l PIRATE Yarrr - ... + set -l PIRATE Yarrr + ... end + +echo $PIRATE # This will not output anything, since the PIRATE variable went out # of scope at the end of the block -echo $PIRATE -</pre> +\endfish In the following code, all output is redirected to the file out.html. -<pre> +\fish begin - echo $xml_header - echo $html_header - if test -e $file - ... - end - ... - -end > out.html -</pre> + echo $xml_header + echo $html_header + if test -e $file + ... + end + ... +end > out.html +\endfish |