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[tcl/en] Fix #2569 and also fit to 79 columns width

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Samantha McVey 2016-11-16 15:34:24 -08:00
parent ce00d724a1
commit 13369ee56c
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1 changed files with 20 additions and 15 deletions
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@ -57,9 +57,9 @@ lighter that that of Lisp, just gets out of the way.
```tcl ```tcl
#! /bin/env tclsh #! /bin/env tclsh
################################################################################ ###############################################################################
## 1. Guidelines ## 1. Guidelines
################################################################################ ###############################################################################
# Tcl is not Bash or C! This needs to be said because standard shell quoting # Tcl is not Bash or C! This needs to be said because standard shell quoting
# habits almost work in Tcl and it is common for people to pick up Tcl and try # habits almost work in Tcl and it is common for people to pick up Tcl and try
@ -72,9 +72,9 @@ lighter that that of Lisp, just gets out of the way.
# are formatted as lists. # are formatted as lists.
################################################################################ ###############################################################################
## 2. Syntax ## 2. Syntax
################################################################################ ###############################################################################
# Every line is a command. The first word is the name of the command, and # Every line is a command. The first word is the name of the command, and
# subsequent words are arguments to the command. Words are delimited by # subsequent words are arguments to the command. Words are delimited by
@ -151,6 +151,8 @@ set greeting "Hello, [set {first name}]"
# To promote the words within a word to individual words of the current # To promote the words within a word to individual words of the current
# command, use the expansion operator, "{*}". # command, use the expansion operator, "{*}".
```
```tcl
set {*}{name Neo} set {*}{name Neo}
# is equivalent to # is equivalent to
@ -171,14 +173,15 @@ namespace eval people {
} }
#The full name of a variable includes its enclosing namespace(s), delimited by two colons: # The full name of a variable includes its enclosing namespace(s), delimited by
# two colons:
set greeting "Hello $people::person1::name" set greeting "Hello $people::person1::name"
################################################################################ ###############################################################################
## 3. A Few Notes ## 3. A Few Notes
################################################################################ ###############################################################################
# All other functionality is implemented via commands. From this point on, # All other functionality is implemented via commands. From this point on,
# there is no new syntax. Everything else there is to learn about Tcl is about # there is no new syntax. Everything else there is to learn about Tcl is about
@ -192,10 +195,11 @@ set greeting "Hello $people::person1::name"
namespace delete :: namespace delete ::
# Because of name resolution behaviour, it's safer to use the "variable" command to # Because of name resolution behaviour, it's safer to use the "variable"
# declare or to assign a value to a namespace. If a variable called "name" already # command to declare or to assign a value to a namespace. If a variable called
# exists in the global namespace, using "set" here will assign a value to the global variable # "name" already exists in the global namespace, using "set" here will assign
# instead of creating a new variable in the local namespace. # a value to the global variable instead of creating a new variable in the
# local namespace.
namespace eval people { namespace eval people {
namespace eval person1 { namespace eval person1 {
variable name Neo variable name Neo
@ -208,9 +212,9 @@ set people::person1::name Neo
################################################################################ ###############################################################################
## 4. Commands ## 4. Commands
################################################################################ ###############################################################################
# Math can be done with the "expr" command. # Math can be done with the "expr" command.
set a 3 set a 3
@ -294,7 +298,8 @@ while {$i < 10} {
} }
# A list is a specially-formatted string. In the simple case, whitespace is sufficient to delimit values # A list is a specially-formatted string. In the simple case, whitespace is
# sufficient to delimit values
set amounts 10\ 33\ 18 set amounts 10\ 33\ 18
set amount [lindex $amounts 1] set amount [lindex $amounts 1]
@ -406,7 +411,7 @@ proc set_double {varname value} {
} }
#get rid of the built-in "while" command. # Get rid of the built-in "while" command.
rename ::while {} rename ::while {}