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| author | Thomas Rast <trast@student.ethz.ch> | 2010-07-30 17:01:50 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-08-02 09:11:28 -0700 |
| commit | ac2e1e632e50c682305fee902b32b1a23ce71546 (patch) | |
| tree | 95b6187f93f3617291ab1c739bca741fc73ae15d /Documentation/git-rev-parse.txt | |
| parent | c97ca277a9a23780ffc322392608429f0b7e707a (diff) | |
| download | git-ac2e1e632e50c682305fee902b32b1a23ce71546.tar.gz | |
Documentation/rev-parse: quoting is required with --parseopt
When calling rev-parse --parseopt, as in the (now fixed) documented
example
eval "$(echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)"
the outermost quoting is required, as otherwise all runs of arbitrary
whitespace inside the resulting 'set -- ...' call would be collapsed
into a single space.
This was exposed as a result of our new use of cat <<\EOF since
47e9cd2 (parseopt: wrap rev-parse --parseopt usage for eval
consumption, 2010-06-12), but has always been a problem when handling
arguments containing e.g. newlines.
Point this out in the documentation, and in particular correct the
example that did not have the quotes.
Noticed-by: Joshua Jensen <jjensen@workspacewhiz.com>
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/git-rev-parse.txt')
| -rw-r--r-- | Documentation/git-rev-parse.txt | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt index 0727f431c6..be4c053360 100644 --- a/Documentation/git-rev-parse.txt +++ b/Documentation/git-rev-parse.txt @@ -184,10 +184,13 @@ scripts the same facilities C builtins have. It works as an option normalizer (e.g. splits single switches aggregate values), a bit like `getopt(1)` does. It takes on the standard input the specification of the options to parse and -understand, and echoes on the standard output a line suitable for `sh(1)` `eval` +understand, and echoes on the standard output a string suitable for `sh(1)` `eval` to replace the arguments with normalized ones. In case of error, it outputs usage on the standard error stream, and exits with code 129. +Note: Make sure you quote the result when passing it to `eval`. See +below for an example. + Input Format ~~~~~~~~~~~~ @@ -244,7 +247,7 @@ bar= some cool option --bar with an argument An option group Header C? option C with an optional argument" -eval `echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?` +eval "$(echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)" ------------ SQ-QUOTE |