diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/Zsh/grammar.yo | 53 | ||||
| -rw-r--r-- | Doc/Zsh/options.yo | 16 |
2 files changed, 67 insertions, 2 deletions
diff --git a/Doc/Zsh/grammar.yo b/Doc/Zsh/grammar.yo index 1eb358ea3..e1b2f0ea6 100644 --- a/Doc/Zsh/grammar.yo +++ b/Doc/Zsh/grammar.yo @@ -438,7 +438,7 @@ where var(term) is at least one newline or tt(;). A short form of tt(select). ) enditem() -texinode(Reserved Words)(Comments)(Alternate Forms For Complex Commands)(Shell Grammar) +texinode(Reserved Words)(Errors)(Alternate Forms For Complex Commands)(Shell Grammar) sect(Reserved Words) cindex(reserved words) findex(disable, use of) @@ -451,7 +451,56 @@ select coproc nocorrect foreach end ! [[ { }) Additionally, `tt(})' is recognized in any position if neither the tt(IGNORE_BRACES) option nor the tt(IGNORE_CLOSE_BRACES) option is set. -texinode(Comments)(Aliasing)(Reserved Words)(Shell Grammar) +texinode(Errors)(Comments)(Reserved Words)(Shell Grammar) +sect(Errors) +cindex(errors, handling of) +Certain errors are treated as fatal by the shell: in an interactive +shell, they cause control to return to the command line, and in a +non-interactive shell they cause the shell to be aborted. In older +versions of zsh, a non-interactive shell running a script would not +abort completely, but would resume execution at the next command to be +read from the script, skipping the remainder of any functions or +shell constructs such as loops or conditions; this somewhat illogical +behaviour can be recovered by setting the option tt(CONTINUE_ON_ERROR). + +Fatal errors found in non-interactive shells include: +startlist() +list(Failure to parse shell options passed when invoking the shell) +list(Failure to change options with the tt(set) builtin) +list(Parse errors of all sorts, including failures to parse +mathematical expressions) +list(Failures to set or modify variable behaviour with tt(typeset), +tt(local), tt(declare), tt(export), tt(integer), tt(float)) +list(Execution of incorrectly positioned loop control structures +(tt(continue), tt(break))) +list(Attempts to use regular expression with no regular expression +module available) +list(Disallowed operations when the tt(RESTRICTED) options is set) +list(Failure to create a pipe needed for a pipeline) +list(Failure to create a multio) +list(Failure to autoload a module needed for a declared shell feature) +list(Errors creating command or process substitutions) +list(Syntax errors in glob qualifiers) +list(File generation errors where not caught by the option tt(BAD_PATTERN)) +list(All bad patterns used for matching within case statements) +list(File generation failures where not caused by tt(NO_MATCH) or +list(All file generation errors where the pattern was used to create a +multio) +list(Memory errors where detected by the shell) +list(Invalid subscripts to shell variables) +list(Attempts to assign read-only variables) +list(Logical errors with variables such as assignment to the wrong type) +list(Use of invalid variable names) +list(Errors in variable substitution syntax) +list(Failure to convert characters in tt($')...tt(') expressions) +similar options) +endlist() + +If the tt(POSIX_BUILTINS) option is set, more errors associated with +shell builtin commands are treated as fatal, as specified by the POSIX +standard. + +texinode(Comments)(Aliasing)(Errors)(Shell Grammar) sect(Comments) cindex(comments) pindex(INTERACTIVE_COMMENTS, use of) diff --git a/Doc/Zsh/options.yo b/Doc/Zsh/options.yo index 3114ecc05..6c8d423cb 100644 --- a/Doc/Zsh/options.yo +++ b/Doc/Zsh/options.yo @@ -1733,6 +1733,22 @@ Make the tt(echo) builtin compatible with the BSD manref(echo)(1) command. This disables backslashed escape sequences in echo strings unless the tt(-e) option is specified. ) +pindex(CONTINUE_ON_ERROR) +pindex(NO_CONTINUE_ON_ERROR) +pindex(CONTINUEONERROR) +pindex(NOCONTINUEONERROR) +cindex(error, option to continue script on) +item(tt(CONTINUE_ON_ERROR))( +If a fatal error is encountered (see +ifnzman(noderef(Errors))\ +ifzman(the section ERRORS in zmanref(zshmisc))), and the code is running +in a script, the shell will resume execution at the next statement +in the script at the top level, in other words outside all functions +or shell constructs such as loops and conditions. This mimics the +behaviour of interactive shells, where the shell returns to the +line editor to read a new command; it was the normal behaviour in versions +of zsh before 5.0.1. +) pindex(CSH_JUNKIE_HISTORY) pindex(NO_CSH_JUNKIE_HISTORY) pindex(CSHJUNKIEHISTORY) |